Finding the Fourth Proportional to 1,417.82, 1,956.64 and 788.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.82 : 1,956.64 = 788.34 : x
2. Step 2: Convert to fraction form
   1,417.82/1,956.64 = 788.34/x
3. Step 3: Cross multiply
   1,417.82x = 1,956.64 × 788.34
4. Step 4: Simplify right side
   1,417.82x = 1,542,497.58
5. Step 5: Solve for x
   x = 1,542,497.58/1,417.82
6. Step 6: Final answer
   x = 1,087.94