Finding the Fourth Proportional to 1,053.78, 1,572.69 and 1,029.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.78 : 1,572.69 = 1,029.18 : x
2. Step 2: Convert to fraction form
   1,053.78/1,572.69 = 1,029.18/x
3. Step 3: Cross multiply
   1,053.78x = 1,572.69 × 1,029.18
4. Step 4: Simplify right side
   1,053.78x = 1,618,581.09
5. Step 5: Solve for x
   x = 1,618,581.09/1,053.78
6. Step 6: Final answer
   x = 1,535.98