Finding the Fourth Proportional to 1,434.89, 2,143.62 and 910.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.89 : 2,143.62 = 910.69 : x
2. Step 2: Convert to fraction form
   1,434.89/2,143.62 = 910.69/x
3. Step 3: Cross multiply
   1,434.89x = 2,143.62 × 910.69
4. Step 4: Simplify right side
   1,434.89x = 1,952,167.94
5. Step 5: Solve for x
   x = 1,952,167.94/1,434.89
6. Step 6: Final answer
   x = 1,360.50