Finding the Fourth Proportional to 2,602.81, 3,591.85 and 1,423.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.81 : 3,591.85 = 1,423.87 : x
2. Step 2: Convert to fraction form
   2,602.81/3,591.85 = 1,423.87/x
3. Step 3: Cross multiply
   2,602.81x = 3,591.85 × 1,423.87
4. Step 4: Simplify right side
   2,602.81x = 5,114,314.92
5. Step 5: Solve for x
   x = 5,114,314.92/2,602.81
6. Step 6: Final answer
   x = 1,964.92