Finding the Fourth Proportional to 1,131.30, 1,560.83 and 758.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.30 : 1,560.83 = 758.66 : x
2. Step 2: Convert to fraction form
   1,131.30/1,560.83 = 758.66/x
3. Step 3: Cross multiply
   1,131.30x = 1,560.83 × 758.66
4. Step 4: Simplify right side
   1,131.30x = 1,184,127.69
5. Step 5: Solve for x
   x = 1,184,127.69/1,131.30
6. Step 6: Final answer
   x = 1,046.70