Finding the Fourth Proportional to 1,156,063.39, 1,595,355.72 and 639,818.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156,063.39 : 1,595,355.72 = 639,818.28 : x
2. Step 2: Convert to fraction form
   1,156,063.39/1,595,355.72 = 639,818.28/x
3. Step 3: Cross multiply
   1,156,063.39x = 1,595,355.72 × 639,818.28
4. Step 4: Simplify right side
   1,156,063.39x = 1,020,737,754,752.76
5. Step 5: Solve for x
   x = 1,020,737,754,752.76/1,156,063.39
6. Step 6: Final answer
   x = 882,942.72