Finding the Fourth Proportional to 1,381.77, 1,906.88 and 752.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.77 : 1,906.88 = 752.34 : x
2. Step 2: Convert to fraction form
   1,381.77/1,906.88 = 752.34/x
3. Step 3: Cross multiply
   1,381.77x = 1,906.88 × 752.34
4. Step 4: Simplify right side
   1,381.77x = 1,434,618.34
5. Step 5: Solve for x
   x = 1,434,618.34/1,381.77
6. Step 6: Final answer
   x = 1,038.25