Finding the Fourth Proportional to 1,124.50, 1,551.74 and 620.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.50 : 1,551.74 = 620.33 : x
2. Step 2: Convert to fraction form
   1,124.50/1,551.74 = 620.33/x
3. Step 3: Cross multiply
   1,124.50x = 1,551.74 × 620.33
4. Step 4: Simplify right side
   1,124.50x = 962,585.83
5. Step 5: Solve for x
   x = 962,585.83/1,124.50
6. Step 6: Final answer
   x = 856.01