Finding the Fourth Proportional to 1,417.60, 1,956.38 and 788.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.60 : 1,956.38 = 788.27 : x
2. Step 2: Convert to fraction form
   1,417.60/1,956.38 = 788.27/x
3. Step 3: Cross multiply
   1,417.60x = 1,956.38 × 788.27
4. Step 4: Simplify right side
   1,417.60x = 1,542,152.41
5. Step 5: Solve for x
   x = 1,542,152.41/1,417.60
6. Step 6: Final answer
   x = 1,087.86