Finding the Fourth Proportional to 2,099.66, 2,890.50 and 1,574.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.66 : 2,890.50 = 1,574.78 : x
2. Step 2: Convert to fraction form
   2,099.66/2,890.50 = 1,574.78/x
3. Step 3: Cross multiply
   2,099.66x = 2,890.50 × 1,574.78
4. Step 4: Simplify right side
   2,099.66x = 4,551,901.59
5. Step 5: Solve for x
   x = 4,551,901.59/2,099.66
6. Step 6: Final answer
   x = 2,167.92