Finding the Fourth Proportional to 1,109,618.69, 1,531,274.31 and 612,903.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,618.69 : 1,531,274.31 = 612,903.61 : x
2. Step 2: Convert to fraction form
   1,109,618.69/1,531,274.31 = 612,903.61/x
3. Step 3: Cross multiply
   1,109,618.69x = 1,531,274.31 × 612,903.61
4. Step 4: Simplify right side
   1,109,618.69x = 938,523,541,778.37
5. Step 5: Solve for x
   x = 938,523,541,778.37/1,109,618.69
6. Step 6: Final answer
   x = 845,807.26