Finding the Fourth Proportional to 2,528.55, 3,789.24 and 1,430.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.55 : 3,789.24 = 1,430.61 : x
2. Step 2: Convert to fraction form
   2,528.55/3,789.24 = 1,430.61/x
3. Step 3: Cross multiply
   2,528.55x = 3,789.24 × 1,430.61
4. Step 4: Simplify right side
   2,528.55x = 5,420,924.64
5. Step 5: Solve for x
   x = 5,420,924.64/2,528.55
6. Step 6: Final answer
   x = 2,143.89