Finding the Fourth Proportional to 1,118,411.60, 1,543,425.59 and 609,113.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,411.60 : 1,543,425.59 = 609,113.57 : x
2. Step 2: Convert to fraction form
   1,118,411.60/1,543,425.59 = 609,113.57/x
3. Step 3: Cross multiply
   1,118,411.60x = 1,543,425.59 × 609,113.57
4. Step 4: Simplify right side
   1,118,411.60x = 940,121,468,108.69
5. Step 5: Solve for x
   x = 940,121,468,108.69/1,118,411.60
6. Step 6: Final answer
   x = 840,586.30