Finding the Fourth Proportional to 1,137,131.01, 1,569,243.78 and 620,885.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137,131.01 : 1,569,243.78 = 620,885.61 : x
2. Step 2: Convert to fraction form
   1,137,131.01/1,569,243.78 = 620,885.61/x
3. Step 3: Cross multiply
   1,137,131.01x = 1,569,243.78 × 620,885.61
4. Step 4: Simplify right side
   1,137,131.01x = 974,320,881,584.01
5. Step 5: Solve for x
   x = 974,320,881,584.01/1,137,131.01
6. Step 6: Final answer
   x = 856,823.77