Finding the Fourth Proportional to 3,595.82, 5,393.55 and 998.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,595.82 : 5,393.55 = 998.78 : x
2. Step 2: Convert to fraction form
   3,595.82/5,393.55 = 998.78/x
3. Step 3: Cross multiply
   3,595.82x = 5,393.55 × 998.78
4. Step 4: Simplify right side
   3,595.82x = 5,386,969.87
5. Step 5: Solve for x
   x = 5,386,969.87/3,595.82
6. Step 6: Final answer
   x = 1,498.12