Finding the Fourth Proportional to 1,378.52, 1,902.32 and 757.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378.52 : 1,902.32 = 757.52 : x
2. Step 2: Convert to fraction form
   1,378.52/1,902.32 = 757.52/x
3. Step 3: Cross multiply
   1,378.52x = 1,902.32 × 757.52
4. Step 4: Simplify right side
   1,378.52x = 1,441,045.45
5. Step 5: Solve for x
   x = 1,441,045.45/1,378.52
6. Step 6: Final answer
   x = 1,045.36