Finding the Fourth Proportional to 1,417.09, 1,955.57 and 787.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.09 : 1,955.57 = 787.62 : x
2. Step 2: Convert to fraction form
   1,417.09/1,955.57 = 787.62/x
3. Step 3: Cross multiply
   1,417.09x = 1,955.57 × 787.62
4. Step 4: Simplify right side
   1,417.09x = 1,540,246.04
5. Step 5: Solve for x
   x = 1,540,246.04/1,417.09
6. Step 6: Final answer
   x = 1,086.91