Finding the Fourth Proportional to 1,174.42, 1,620.24 and 754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.42 : 1,620.24 = 754.72 : x
2. Step 2: Convert to fraction form
   1,174.42/1,620.24 = 754.72/x
3. Step 3: Cross multiply
   1,174.42x = 1,620.24 × 754.72
4. Step 4: Simplify right side
   1,174.42x = 1,222,827.02
5. Step 5: Solve for x
   x = 1,222,827.02/1,174.42
6. Step 6: Final answer
   x = 1,041.21