Finding the Fourth Proportional to 2,656.25, 3,985.52 and 1,423.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.25 : 3,985.52 = 1,423.31 : x
2. Step 2: Convert to fraction form
   2,656.25/3,985.52 = 1,423.31/x
3. Step 3: Cross multiply
   2,656.25x = 3,985.52 × 1,423.31
4. Step 4: Simplify right side
   2,656.25x = 5,672,630.47
5. Step 5: Solve for x
   x = 5,672,630.47/2,656.25
6. Step 6: Final answer
   x = 2,135.58