Finding the Fourth Proportional to 1,417.99, 1,956.72 and 788.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.99 : 1,956.72 = 788.48 : x
2. Step 2: Convert to fraction form
   1,417.99/1,956.72 = 788.48/x
3. Step 3: Cross multiply
   1,417.99x = 1,956.72 × 788.48
4. Step 4: Simplify right side
   1,417.99x = 1,542,842.78
5. Step 5: Solve for x
   x = 1,542,842.78/1,417.99
6. Step 6: Final answer
   x = 1,088.05