Finding the Fourth Proportional to 1,655.50, 2,484.42 and 789.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.50 : 2,484.42 = 789.88 : x
2. Step 2: Convert to fraction form
   1,655.50/2,484.42 = 789.88/x
3. Step 3: Cross multiply
   1,655.50x = 2,484.42 × 789.88
4. Step 4: Simplify right side
   1,655.50x = 1,962,393.67
5. Step 5: Solve for x
   x = 1,962,393.67/1,655.50
6. Step 6: Final answer
   x = 1,185.38