Finding the Fourth Proportional to 2,099.18, 2,897.10 and 1,260.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.18 : 2,897.10 = 1,260.15 : x
2. Step 2: Convert to fraction form
   2,099.18/2,897.10 = 1,260.15/x
3. Step 3: Cross multiply
   2,099.18x = 2,897.10 × 1,260.15
4. Step 4: Simplify right side
   2,099.18x = 3,650,780.57
5. Step 5: Solve for x
   x = 3,650,780.57/2,099.18
6. Step 6: Final answer
   x = 1,739.15