Finding the Fourth Proportional to 1,174.74, 1,760.86 and 558.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.74 : 1,760.86 = 558.15 : x
2. Step 2: Convert to fraction form
   1,174.74/1,760.86 = 558.15/x
3. Step 3: Cross multiply
   1,174.74x = 1,760.86 × 558.15
4. Step 4: Simplify right side
   1,174.74x = 982,824.01
5. Step 5: Solve for x
   x = 982,824.01/1,174.74
6. Step 6: Final answer
   x = 836.63