Finding the Fourth Proportional to 2,663.82, 3,990.24 and 2,356.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.82 : 3,990.24 = 2,356.47 : x
2. Step 2: Convert to fraction form
   2,663.82/3,990.24 = 2,356.47/x
3. Step 3: Cross multiply
   2,663.82x = 3,990.24 × 2,356.47
4. Step 4: Simplify right side
   2,663.82x = 9,402,880.85
5. Step 5: Solve for x
   x = 9,402,880.85/2,663.82
6. Step 6: Final answer
   x = 3,529.85