Finding the Fourth Proportional to 1,684.53, 2,525.26 and 1,426.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,684.53 : 2,525.26 = 1,426.20 : x
2. Step 2: Convert to fraction form
   1,684.53/2,525.26 = 1,426.20/x
3. Step 3: Cross multiply
   1,684.53x = 2,525.26 × 1,426.20
4. Step 4: Simplify right side
   1,684.53x = 3,601,506.05
5. Step 5: Solve for x
   x = 3,601,506.05/1,684.53
6. Step 6: Final answer
   x = 2,137.99