Finding the Fourth Proportional to 1,429.08, 1,969.20 and 1,055.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.08 : 1,969.20 = 1,055.48 : x
2. Step 2: Convert to fraction form
   1,429.08/1,969.20 = 1,055.48/x
3. Step 3: Cross multiply
   1,429.08x = 1,969.20 × 1,055.48
4. Step 4: Simplify right side
   1,429.08x = 2,078,451.22
5. Step 5: Solve for x
   x = 2,078,451.22/1,429.08
6. Step 6: Final answer
   x = 1,454.40