Finding the Fourth Proportional to 1,434.89, 2,152.99 and 851.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.89 : 2,152.99 = 851.05 : x
2. Step 2: Convert to fraction form
   1,434.89/2,152.99 = 851.05/x
3. Step 3: Cross multiply
   1,434.89x = 2,152.99 × 851.05
4. Step 4: Simplify right side
   1,434.89x = 1,832,302.14
5. Step 5: Solve for x
   x = 1,832,302.14/1,434.89
6. Step 6: Final answer
   x = 1,276.96