Finding the Fourth Proportional to 1,116,310.61, 1,540,321.83 and 657,516.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116,310.61 : 1,540,321.83 = 657,516.53 : x
2. Step 2: Convert to fraction form
   1,116,310.61/1,540,321.83 = 657,516.53/x
3. Step 3: Cross multiply
   1,116,310.61x = 1,540,321.83 × 657,516.53
4. Step 4: Simplify right side
   1,116,310.61x = 1,012,787,057,043.24
5. Step 5: Solve for x
   x = 1,012,787,057,043.24/1,116,310.61
6. Step 6: Final answer
   x = 907,262.77