Finding the Fourth Proportional to 1,417.30, 1,955.85 and 787.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.30 : 1,955.85 = 787.86 : x
2. Step 2: Convert to fraction form
   1,417.30/1,955.85 = 787.86/x
3. Step 3: Cross multiply
   1,417.30x = 1,955.85 × 787.86
4. Step 4: Simplify right side
   1,417.30x = 1,540,933.03
5. Step 5: Solve for x
   x = 1,540,933.03/1,417.30
6. Step 6: Final answer
   x = 1,087.23