Finding the Fourth Proportional to 2,099.70, 2,897.59 and 1,155.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.70 : 2,897.59 = 1,155.55 : x
2. Step 2: Convert to fraction form
   2,099.70/2,897.59 = 1,155.55/x
3. Step 3: Cross multiply
   2,099.70x = 2,897.59 × 1,155.55
4. Step 4: Simplify right side
   2,099.70x = 3,348,310.12
5. Step 5: Solve for x
   x = 3,348,310.12/2,099.70
6. Step 6: Final answer
   x = 1,594.66