Finding the Fourth Proportional to 2,558.25, 3,530.33 and 1,423.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.25 : 3,530.33 = 1,423.91 : x
2. Step 2: Convert to fraction form
   2,558.25/3,530.33 = 1,423.91/x
3. Step 3: Cross multiply
   2,558.25x = 3,530.33 × 1,423.91
4. Step 4: Simplify right side
   2,558.25x = 5,026,858.10
5. Step 5: Solve for x
   x = 5,026,858.10/2,558.25
6. Step 6: Final answer
   x = 1,964.96