Finding the Fourth Proportional to 1,153.98, 1,591.28 and 760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.98 : 1,591.28 = 760.50 : x
2. Step 2: Convert to fraction form
   1,153.98/1,591.28 = 760.50/x
3. Step 3: Cross multiply
   1,153.98x = 1,591.28 × 760.50
4. Step 4: Simplify right side
   1,153.98x = 1,210,168.44
5. Step 5: Solve for x
   x = 1,210,168.44/1,153.98
6. Step 6: Final answer
   x = 1,048.69