Finding the Fourth Proportional to 2,611.35, 3,603.56 and 1,432.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.35 : 3,603.56 = 1,432.39 : x
2. Step 2: Convert to fraction form
   2,611.35/3,603.56 = 1,432.39/x
3. Step 3: Cross multiply
   2,611.35x = 3,603.56 × 1,432.39
4. Step 4: Simplify right side
   2,611.35x = 5,161,703.31
5. Step 5: Solve for x
   x = 5,161,703.31/2,611.35
6. Step 6: Final answer
   x = 1,976.64