Finding the Fourth Proportional to 1,417.09, 1,955.51 and 787.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.09 : 1,955.51 = 787.58 : x
2. Step 2: Convert to fraction form
   1,417.09/1,955.51 = 787.58/x
3. Step 3: Cross multiply
   1,417.09x = 1,955.51 × 787.58
4. Step 4: Simplify right side
   1,417.09x = 1,540,116.63
5. Step 5: Solve for x
   x = 1,540,116.63/1,417.09
6. Step 6: Final answer
   x = 1,086.82