Finding the Fourth Proportional to 1,288,908,498.39, 1,778,383,454.49 and 752,756,109.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,908,498.39 : 1,778,383,454.49 = 752,756,109.90 : x
2. Step 2: Convert to fraction form
   1,288,908,498.39/1,778,383,454.49 = 752,756,109.90/x
3. Step 3: Cross multiply
   1,288,908,498.39x = 1,778,383,454.49 × 752,756,109.90
4. Step 4: Simplify right side
   1,288,908,498.39x = 1,338,689,011,112,416,000
5. Step 5: Solve for x
   x = 1,338,689,011,112,416,000/1,288,908,498.39
6. Step 6: Final answer
   x = 1,038,622,223.99