Finding the Fourth Proportional to 1,251.10, 1,875.34 and 557.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251.10 : 1,875.34 = 557.61 : x
2. Step 2: Convert to fraction form
   1,251.10/1,875.34 = 557.61/x
3. Step 3: Cross multiply
   1,251.10x = 1,875.34 × 557.61
4. Step 4: Simplify right side
   1,251.10x = 1,045,708.34
5. Step 5: Solve for x
   x = 1,045,708.34/1,251.10
6. Step 6: Final answer
   x = 835.83