Finding the Fourth Proportional to 2,403.90, 3,323.16 and 2,381.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.90 : 3,323.16 = 2,381.76 : x
2. Step 2: Convert to fraction form
   2,403.90/3,323.16 = 2,381.76/x
3. Step 3: Cross multiply
   2,403.90x = 3,323.16 × 2,381.76
4. Step 4: Simplify right side
   2,403.90x = 7,914,969.56
5. Step 5: Solve for x
   x = 7,914,969.56/2,403.90
6. Step 6: Final answer
   x = 3,292.55