Finding the Fourth Proportional to 2,588.96, 3,885.71 and 1,420.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588.96 : 3,885.71 = 1,420.04 : x
2. Step 2: Convert to fraction form
   2,588.96/3,885.71 = 1,420.04/x
3. Step 3: Cross multiply
   2,588.96x = 3,885.71 × 1,420.04
4. Step 4: Simplify right side
   2,588.96x = 5,517,837.10
5. Step 5: Solve for x
   x = 5,517,837.10/2,588.96
6. Step 6: Final answer
   x = 2,131.30