Finding the Fourth Proportional to 1,528.06, 2,108.82 and 938.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.06 : 2,108.82 = 938.52 : x
2. Step 2: Convert to fraction form
   1,528.06/2,108.82 = 938.52/x
3. Step 3: Cross multiply
   1,528.06x = 2,108.82 × 938.52
4. Step 4: Simplify right side
   1,528.06x = 1,979,169.75
5. Step 5: Solve for x
   x = 1,979,169.75/1,528.06
6. Step 6: Final answer
   x = 1,295.22