Finding the Fourth Proportional to 2,663.90, 3,994.48 and 1,432.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.90 : 3,994.48 = 1,432.35 : x
2. Step 2: Convert to fraction form
   2,663.90/3,994.48 = 1,432.35/x
3. Step 3: Cross multiply
   2,663.90x = 3,994.48 × 1,432.35
4. Step 4: Simplify right side
   2,663.90x = 5,721,493.43
5. Step 5: Solve for x
   x = 5,721,493.43/2,663.90
6. Step 6: Final answer
   x = 2,147.79