Finding the Fourth Proportional to 1,117,583.56, 1,542,298.76 and 688,111.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,583.56 : 1,542,298.76 = 688,111.48 : x
2. Step 2: Convert to fraction form
   1,117,583.56/1,542,298.76 = 688,111.48/x
3. Step 3: Cross multiply
   1,117,583.56x = 1,542,298.76 × 688,111.48
4. Step 4: Simplify right side
   1,117,583.56x = 1,061,273,482,345.76
5. Step 5: Solve for x
   x = 1,061,273,482,345.76/1,117,583.56
6. Step 6: Final answer
   x = 949,614.44