Finding the Fourth Proportional to 1,429.99, 2,145.32 and 845.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.99 : 2,145.32 = 845.48 : x
2. Step 2: Convert to fraction form
   1,429.99/2,145.32 = 845.48/x
3. Step 3: Cross multiply
   1,429.99x = 2,145.32 × 845.48
4. Step 4: Simplify right side
   1,429.99x = 1,813,825.15
5. Step 5: Solve for x
   x = 1,813,825.15/1,429.99
6. Step 6: Final answer
   x = 1,268.42