Finding the Fourth Proportional to 2,255,766.69, 3,112,669.31 and 1,288,959.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255,766.69 : 3,112,669.31 = 1,288,959.87 : x
2. Step 2: Convert to fraction form
   2,255,766.69/3,112,669.31 = 1,288,959.87/x
3. Step 3: Cross multiply
   2,255,766.69x = 3,112,669.31 × 1,288,959.87
4. Step 4: Simplify right side
   2,255,766.69x = 4,012,105,822,725.79
5. Step 5: Solve for x
   x = 4,012,105,822,725.79/2,255,766.69
6. Step 6: Final answer
   x = 1,778,599.64