Finding the Fourth Proportional to 1,434.48, 1,979.55 and 845.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.48 : 1,979.55 = 845.04 : x
2. Step 2: Convert to fraction form
   1,434.48/1,979.55 = 845.04/x
3. Step 3: Cross multiply
   1,434.48x = 1,979.55 × 845.04
4. Step 4: Simplify right side
   1,434.48x = 1,672,798.93
5. Step 5: Solve for x
   x = 1,672,798.93/1,434.48
6. Step 6: Final answer
   x = 1,166.14