Finding the Fourth Proportional to 1,381.99, 1,907.15 and 752.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.99 : 1,907.15 = 752.52 : x
2. Step 2: Convert to fraction form
   1,381.99/1,907.15 = 752.52/x
3. Step 3: Cross multiply
   1,381.99x = 1,907.15 × 752.52
4. Step 4: Simplify right side
   1,381.99x = 1,435,168.52
5. Step 5: Solve for x
   x = 1,435,168.52/1,381.99
6. Step 6: Final answer
   x = 1,038.48