Finding the Fourth Proportional to 1,423.25, 1,964.34 and 1,360.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.25 : 1,964.34 = 1,360.99 : x
2. Step 2: Convert to fraction form
   1,423.25/1,964.34 = 1,360.99/x
3. Step 3: Cross multiply
   1,423.25x = 1,964.34 × 1,360.99
4. Step 4: Simplify right side
   1,423.25x = 2,673,447.10
5. Step 5: Solve for x
   x = 2,673,447.10/1,423.25
6. Step 6: Final answer
   x = 1,878.41