Finding the Fourth Proportional to 1,686.56, 2,327.04 and 1,097.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.56 : 2,327.04 = 1,097.12 : x
2. Step 2: Convert to fraction form
   1,686.56/2,327.04 = 1,097.12/x
3. Step 3: Cross multiply
   1,686.56x = 2,327.04 × 1,097.12
4. Step 4: Simplify right side
   1,686.56x = 2,553,042.12
5. Step 5: Solve for x
   x = 2,553,042.12/1,686.56
6. Step 6: Final answer
   x = 1,513.76