Finding the Fourth Proportional to 1,381.89, 1,907.03 and 752.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.89 : 1,907.03 = 752.42 : x
2. Step 2: Convert to fraction form
   1,381.89/1,907.03 = 752.42/x
3. Step 3: Cross multiply
   1,381.89x = 1,907.03 × 752.42
4. Step 4: Simplify right side
   1,381.89x = 1,434,874.22
5. Step 5: Solve for x
   x = 1,434,874.22/1,381.89
6. Step 6: Final answer
   x = 1,038.34