Finding the Fourth Proportional to 2,611.91, 3,604.43 and 1,432.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.91 : 3,604.43 = 1,432.98 : x
2. Step 2: Convert to fraction form
   2,611.91/3,604.43 = 1,432.98/x
3. Step 3: Cross multiply
   2,611.91x = 3,604.43 × 1,432.98
4. Step 4: Simplify right side
   2,611.91x = 5,165,076.10
5. Step 5: Solve for x
   x = 5,165,076.10/2,611.91
6. Step 6: Final answer
   x = 1,977.51