Finding the Fourth Proportional to 2,392.71, 3,303.54 and 2,139.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,392.71 : 3,303.54 = 2,139.84 : x
2. Step 2: Convert to fraction form
   2,392.71/3,303.54 = 2,139.84/x
3. Step 3: Cross multiply
   2,392.71x = 3,303.54 × 2,139.84
4. Step 4: Simplify right side
   2,392.71x = 7,069,047.03
5. Step 5: Solve for x
   x = 7,069,047.03/2,392.71
6. Step 6: Final answer
   x = 2,954.41