Finding the Fourth Proportional to 1,342.25, 1,852.47 and 752.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.25 : 1,852.47 = 752.78 : x
2. Step 2: Convert to fraction form
   1,342.25/1,852.47 = 752.78/x
3. Step 3: Cross multiply
   1,342.25x = 1,852.47 × 752.78
4. Step 4: Simplify right side
   1,342.25x = 1,394,502.37
5. Step 5: Solve for x
   x = 1,394,502.37/1,342.25
6. Step 6: Final answer
   x = 1,038.93