Finding the Fourth Proportional to 2,423.52, 3,344.89 and 1,428.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.52 : 3,344.89 = 1,428.74 : x
2. Step 2: Convert to fraction form
   2,423.52/3,344.89 = 1,428.74/x
3. Step 3: Cross multiply
   2,423.52x = 3,344.89 × 1,428.74
4. Step 4: Simplify right side
   2,423.52x = 4,778,978.14
5. Step 5: Solve for x
   x = 4,778,978.14/2,423.52
6. Step 6: Final answer
   x = 1,971.92