Finding the Fourth Proportional to 1,528.29, 2,109.09 and 997.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.29 : 2,109.09 = 997.52 : x
2. Step 2: Convert to fraction form
   1,528.29/2,109.09 = 997.52/x
3. Step 3: Cross multiply
   1,528.29x = 2,109.09 × 997.52
4. Step 4: Simplify right side
   1,528.29x = 2,103,859.46
5. Step 5: Solve for x
   x = 2,103,859.46/1,528.29
6. Step 6: Final answer
   x = 1,376.61