Finding the Fourth Proportional to 1,174.39, 1,760.72 and 557.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.39 : 1,760.72 = 557.72 : x
2. Step 2: Convert to fraction form
   1,174.39/1,760.72 = 557.72/x
3. Step 3: Cross multiply
   1,174.39x = 1,760.72 × 557.72
4. Step 4: Simplify right side
   1,174.39x = 981,988.76
5. Step 5: Solve for x
   x = 981,988.76/1,174.39
6. Step 6: Final answer
   x = 836.17