Finding the Fourth Proportional to 1,309.59, 1,807.52 and 750.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309.59 : 1,807.52 = 750.15 : x
2. Step 2: Convert to fraction form
   1,309.59/1,807.52 = 750.15/x
3. Step 3: Cross multiply
   1,309.59x = 1,807.52 × 750.15
4. Step 4: Simplify right side
   1,309.59x = 1,355,907.38
5. Step 5: Solve for x
   x = 1,355,907.38/1,309.59
6. Step 6: Final answer
   x = 1,035.37