Finding the Fourth Proportional to 2,611.27, 3,603.58 and 1,432.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.27 : 3,603.58 = 1,432.31 : x
2. Step 2: Convert to fraction form
   2,611.27/3,603.58 = 1,432.31/x
3. Step 3: Cross multiply
   2,611.27x = 3,603.58 × 1,432.31
4. Step 4: Simplify right side
   2,611.27x = 5,161,449.10
5. Step 5: Solve for x
   x = 5,161,449.10/2,611.27
6. Step 6: Final answer
   x = 1,976.61