Finding the Fourth Proportional to 1,137,171.33, 1,569,284.37 and 620,923.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137,171.33 : 1,569,284.37 = 620,923.61 : x
2. Step 2: Convert to fraction form
   1,137,171.33/1,569,284.37 = 620,923.61/x
3. Step 3: Cross multiply
   1,137,171.33x = 1,569,284.37 × 620,923.61
4. Step 4: Simplify right side
   1,137,171.33x = 974,405,708,290.55
5. Step 5: Solve for x
   x = 974,405,708,290.55/1,137,171.33
6. Step 6: Final answer
   x = 856,867.99