Finding the Fourth Proportional to 2,084.57, 3,128.59 and 1,097.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.57 : 3,128.59 = 1,097.74 : x
2. Step 2: Convert to fraction form
   2,084.57/3,128.59 = 1,097.74/x
3. Step 3: Cross multiply
   2,084.57x = 3,128.59 × 1,097.74
4. Step 4: Simplify right side
   2,084.57x = 3,434,366.07
5. Step 5: Solve for x
   x = 3,434,366.07/2,084.57
6. Step 6: Final answer
   x = 1,647.52