Finding the Fourth Proportional to 3,595.61, 5,393.39 and 998.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,595.61 : 5,393.39 = 998.55 : x
2. Step 2: Convert to fraction form
   3,595.61/5,393.39 = 998.55/x
3. Step 3: Cross multiply
   3,595.61x = 5,393.39 × 998.55
4. Step 4: Simplify right side
   3,595.61x = 5,385,564.59
5. Step 5: Solve for x
   x = 5,385,564.59/3,595.61
6. Step 6: Final answer
   x = 1,497.82