Finding the Fourth Proportional to 2,611.64, 3,603.89 and 1,432.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.64 : 3,603.89 = 1,432.49 : x
2. Step 2: Convert to fraction form
   2,611.64/3,603.89 = 1,432.49/x
3. Step 3: Cross multiply
   2,611.64x = 3,603.89 × 1,432.49
4. Step 4: Simplify right side
   2,611.64x = 5,162,521.95
5. Step 5: Solve for x
   x = 5,162,521.95/2,611.64
6. Step 6: Final answer
   x = 1,976.73