Finding the Fourth Proportional to 2,097.12, 2,892.96 and 1,397.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.12 : 2,892.96 = 1,397.28 : x
2. Step 2: Convert to fraction form
   2,097.12/2,892.96 = 1,397.28/x
3. Step 3: Cross multiply
   2,097.12x = 2,892.96 × 1,397.28
4. Step 4: Simplify right side
   2,097.12x = 4,042,275.15
5. Step 5: Solve for x
   x = 4,042,275.15/2,097.12
6. Step 6: Final answer
   x = 1,927.54