Finding the Fourth Proportional to 2,989.59, 4,124.52 and 1,870.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.59 : 4,124.52 = 1,870.10 : x
2. Step 2: Convert to fraction form
   2,989.59/4,124.52 = 1,870.10/x
3. Step 3: Cross multiply
   2,989.59x = 4,124.52 × 1,870.10
4. Step 4: Simplify right side
   2,989.59x = 7,713,275.16
5. Step 5: Solve for x
   x = 7,713,275.16/2,989.59
6. Step 6: Final answer
   x = 2,580.04