Finding the Fourth Proportional to 1,160.19, 1,601.25 and 740.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.19 : 1,601.25 = 740.72 : x
2. Step 2: Convert to fraction form
   1,160.19/1,601.25 = 740.72/x
3. Step 3: Cross multiply
   1,160.19x = 1,601.25 × 740.72
4. Step 4: Simplify right side
   1,160.19x = 1,186,069.89
5. Step 5: Solve for x
   x = 1,186,069.89/1,160.19
6. Step 6: Final answer
   x = 1,022.31