Finding the Fourth Proportional to 2,600.34, 3,588.47 and 1,421.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.34 : 3,588.47 = 1,421.42 : x
2. Step 2: Convert to fraction form
   2,600.34/3,588.47 = 1,421.42/x
3. Step 3: Cross multiply
   2,600.34x = 3,588.47 × 1,421.42
4. Step 4: Simplify right side
   2,600.34x = 5,100,703.31
5. Step 5: Solve for x
   x = 5,100,703.31/2,600.34
6. Step 6: Final answer
   x = 1,961.56