Finding the Fourth Proportional to 1,332.05, 1,993.89 and 1,098.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,332.05 : 1,993.89 = 1,098.77 : x
2. Step 2: Convert to fraction form
   1,332.05/1,993.89 = 1,098.77/x
3. Step 3: Cross multiply
   1,332.05x = 1,993.89 × 1,098.77
4. Step 4: Simplify right side
   1,332.05x = 2,190,826.52
5. Step 5: Solve for x
   x = 2,190,826.52/1,332.05
6. Step 6: Final answer
   x = 1,644.70