Finding the Fourth Proportional to 1,920.08, 2,877.42 and 1,097.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.08 : 2,877.42 = 1,097.12 : x
2. Step 2: Convert to fraction form
   1,920.08/2,877.42 = 1,097.12/x
3. Step 3: Cross multiply
   1,920.08x = 2,877.42 × 1,097.12
4. Step 4: Simplify right side
   1,920.08x = 3,156,875.03
5. Step 5: Solve for x
   x = 3,156,875.03/1,920.08
6. Step 6: Final answer
   x = 1,644.14