Finding the Fourth Proportional to 1,381.56, 1,906.52 and 752.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.56 : 1,906.52 = 752.07 : x
2. Step 2: Convert to fraction form
   1,381.56/1,906.52 = 752.07/x
3. Step 3: Cross multiply
   1,381.56x = 1,906.52 × 752.07
4. Step 4: Simplify right side
   1,381.56x = 1,433,836.50
5. Step 5: Solve for x
   x = 1,433,836.50/1,381.56
6. Step 6: Final answer
   x = 1,037.84