Finding the Fourth Proportional to 1,381.82, 1,906.91 and 752.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.82 : 1,906.91 = 752.36 : x
2. Step 2: Convert to fraction form
   1,381.82/1,906.91 = 752.36/x
3. Step 3: Cross multiply
   1,381.82x = 1,906.91 × 752.36
4. Step 4: Simplify right side
   1,381.82x = 1,434,682.81
5. Step 5: Solve for x
   x = 1,434,682.81/1,381.82
6. Step 6: Final answer
   x = 1,038.26