Finding the Fourth Proportional to 2,611.30, 3,603.57 and 1,432.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.30 : 3,603.57 = 1,432.35 : x
2. Step 2: Convert to fraction form
   2,611.30/3,603.57 = 1,432.35/x
3. Step 3: Cross multiply
   2,611.30x = 3,603.57 × 1,432.35
4. Step 4: Simplify right side
   2,611.30x = 5,161,573.49
5. Step 5: Solve for x
   x = 5,161,573.49/2,611.30
6. Step 6: Final answer
   x = 1,976.63