Finding the Fourth Proportional to 2,611.11, 3,603.31 and 1,432.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.11 : 3,603.31 = 1,432.18 : x
2. Step 2: Convert to fraction form
   2,611.11/3,603.31 = 1,432.18/x
3. Step 3: Cross multiply
   2,611.11x = 3,603.31 × 1,432.18
4. Step 4: Simplify right side
   2,611.11x = 5,160,588.52
5. Step 5: Solve for x
   x = 5,160,588.52/2,611.11
6. Step 6: Final answer
   x = 1,976.40