Finding the Fourth Proportional to 1,416.89, 1,955.62 and 787.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,416.89 : 1,955.62 = 787.63 : x
2. Step 2: Convert to fraction form
   1,416.89/1,955.62 = 787.63/x
3. Step 3: Cross multiply
   1,416.89x = 1,955.62 × 787.63
4. Step 4: Simplify right side
   1,416.89x = 1,540,308.03
5. Step 5: Solve for x
   x = 1,540,308.03/1,416.89
6. Step 6: Final answer
   x = 1,087.11