Finding the Fourth Proportional to 1,708.64, 2,355.72 and 1,118.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,708.64 : 2,355.72 = 1,118.96 : x
2. Step 2: Convert to fraction form
   1,708.64/2,355.72 = 1,118.96/x
3. Step 3: Cross multiply
   1,708.64x = 2,355.72 × 1,118.96
4. Step 4: Simplify right side
   1,708.64x = 2,635,956.45
5. Step 5: Solve for x
   x = 2,635,956.45/1,708.64
6. Step 6: Final answer
   x = 1,542.72