Finding the Fourth Proportional to 1,979.61, 2,730.15 and 1,423.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.61 : 2,730.15 = 1,423.76 : x
2. Step 2: Convert to fraction form
   1,979.61/2,730.15 = 1,423.76/x
3. Step 3: Cross multiply
   1,979.61x = 2,730.15 × 1,423.76
4. Step 4: Simplify right side
   1,979.61x = 3,887,064.71
5. Step 5: Solve for x
   x = 3,887,064.71/1,979.61
6. Step 6: Final answer
   x = 1,963.55