Finding the Fourth Proportional to 1,920.02, 2,877.77 and 1,098.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.02 : 2,877.77 = 1,098.86 : x
2. Step 2: Convert to fraction form
   1,920.02/2,877.77 = 1,098.86/x
3. Step 3: Cross multiply
   1,920.02x = 2,877.77 × 1,098.86
4. Step 4: Simplify right side
   1,920.02x = 3,162,246.46
5. Step 5: Solve for x
   x = 3,162,246.46/1,920.02
6. Step 6: Final answer
   x = 1,646.99