Finding the Fourth Proportional to 1,429.98, 2,148.56 and 910.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.98 : 2,148.56 = 910.24 : x
2. Step 2: Convert to fraction form
   1,429.98/2,148.56 = 910.24/x
3. Step 3: Cross multiply
   1,429.98x = 2,148.56 × 910.24
4. Step 4: Simplify right side
   1,429.98x = 1,955,705.25
5. Step 5: Solve for x
   x = 1,955,705.25/1,429.98
6. Step 6: Final answer
   x = 1,367.65