Finding the Fourth Proportional to 2,592.52, 3,890.61 and 1,407.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,592.52 : 3,890.61 = 1,407.91 : x
2. Step 2: Convert to fraction form
   2,592.52/3,890.61 = 1,407.91/x
3. Step 3: Cross multiply
   2,592.52x = 3,890.61 × 1,407.91
4. Step 4: Simplify right side
   2,592.52x = 5,477,628.73
5. Step 5: Solve for x
   x = 5,477,628.73/2,592.52
6. Step 6: Final answer
   x = 2,112.86