Finding the Fourth Proportional to 1,408.52, 1,943.70 and 787.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.52 : 1,943.70 = 787.48 : x
2. Step 2: Convert to fraction form
   1,408.52/1,943.70 = 787.48/x
3. Step 3: Cross multiply
   1,408.52x = 1,943.70 × 787.48
4. Step 4: Simplify right side
   1,408.52x = 1,530,624.88
5. Step 5: Solve for x
   x = 1,530,624.88/1,408.52
6. Step 6: Final answer
   x = 1,086.69