Finding the Fourth Proportional to 1,097.40, 1,631.98 and 1,062.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.40 : 1,631.98 = 1,062.79 : x
2. Step 2: Convert to fraction form
   1,097.40/1,631.98 = 1,062.79/x
3. Step 3: Cross multiply
   1,097.40x = 1,631.98 × 1,062.79
4. Step 4: Simplify right side
   1,097.40x = 1,734,445.29
5. Step 5: Solve for x
   x = 1,734,445.29/1,097.40
6. Step 6: Final answer
   x = 1,580.50