Finding the Fourth Proportional to 2,600.16, 3,588.25 and 1,421.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.16 : 3,588.25 = 1,421.25 : x
2. Step 2: Convert to fraction form
   2,600.16/3,588.25 = 1,421.25/x
3. Step 3: Cross multiply
   2,600.16x = 3,588.25 × 1,421.25
4. Step 4: Simplify right side
   2,600.16x = 5,099,796.76
5. Step 5: Solve for x
   x = 5,099,796.76/2,600.16
6. Step 6: Final answer
   x = 1,961.34