Finding the Fourth Proportional to 1,381.63, 1,906.63 and 752.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.63 : 1,906.63 = 752.15 : x
2. Step 2: Convert to fraction form
   1,381.63/1,906.63 = 752.15/x
3. Step 3: Cross multiply
   1,381.63x = 1,906.63 × 752.15
4. Step 4: Simplify right side
   1,381.63x = 1,434,074.64
5. Step 5: Solve for x
   x = 1,434,074.64/1,381.63
6. Step 6: Final answer
   x = 1,037.96