Finding the Fourth Proportional to 1,152.83, 1,579.82 and 1,042.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.83 : 1,579.82 = 1,042.11 : x
2. Step 2: Convert to fraction form
   1,152.83/1,579.82 = 1,042.11/x
3. Step 3: Cross multiply
   1,152.83x = 1,579.82 × 1,042.11
4. Step 4: Simplify right side
   1,152.83x = 1,646,341.01
5. Step 5: Solve for x
   x = 1,646,341.01/1,152.83
6. Step 6: Final answer
   x = 1,428.09