Finding the Fourth Proportional to 1,479.69, 2,230.76 and 1,400.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.69 : 2,230.76 = 1,400.31 : x
2. Step 2: Convert to fraction form
   1,479.69/2,230.76 = 1,400.31/x
3. Step 3: Cross multiply
   1,479.69x = 2,230.76 × 1,400.31
4. Step 4: Simplify right side
   1,479.69x = 3,123,759.04
5. Step 5: Solve for x
   x = 3,123,759.04/1,479.69
6. Step 6: Final answer
   x = 2,111.09