Finding the Fourth Proportional to 2,602.71, 3,591.73 and 1,423.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.71 : 3,591.73 = 1,423.78 : x
2. Step 2: Convert to fraction form
   2,602.71/3,591.73 = 1,423.78/x
3. Step 3: Cross multiply
   2,602.71x = 3,591.73 × 1,423.78
4. Step 4: Simplify right side
   2,602.71x = 5,113,824.36
5. Step 5: Solve for x
   x = 5,113,824.36/2,602.71
6. Step 6: Final answer
   x = 1,964.81