Finding the Fourth Proportional to 1,131.15, 1,560.83 and 738.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.15 : 1,560.83 = 738.30 : x
2. Step 2: Convert to fraction form
   1,131.15/1,560.83 = 738.30/x
3. Step 3: Cross multiply
   1,131.15x = 1,560.83 × 738.30
4. Step 4: Simplify right side
   1,131.15x = 1,152,357.10
5. Step 5: Solve for x
   x = 1,152,357.10/1,131.15
6. Step 6: Final answer
   x = 1,018.75