Finding the Fourth Proportional to 1,417.05, 1,955.48 and 787.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.05 : 1,955.48 = 787.56 : x
2. Step 2: Convert to fraction form
   1,417.05/1,955.48 = 787.56/x
3. Step 3: Cross multiply
   1,417.05x = 1,955.48 × 787.56
4. Step 4: Simplify right side
   1,417.05x = 1,540,057.83
5. Step 5: Solve for x
   x = 1,540,057.83/1,417.05
6. Step 6: Final answer
   x = 1,086.81