Finding the Fourth Proportional to 2,611.51, 3,603.93 and 1,432.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.51 : 3,603.93 = 1,432.59 : x
2. Step 2: Convert to fraction form
   2,611.51/3,603.93 = 1,432.59/x
3. Step 3: Cross multiply
   2,611.51x = 3,603.93 × 1,432.59
4. Step 4: Simplify right side
   2,611.51x = 5,162,935.19
5. Step 5: Solve for x
   x = 5,162,935.19/2,611.51
6. Step 6: Final answer
   x = 1,976.99