Finding the Fourth Proportional to 1,569.37, 2,354.23 and 691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.37 : 2,354.23 = 691.50 : x
2. Step 2: Convert to fraction form
   1,569.37/2,354.23 = 691.50/x
3. Step 3: Cross multiply
   1,569.37x = 2,354.23 × 691.50
4. Step 4: Simplify right side
   1,569.37x = 1,627,938.27
5. Step 5: Solve for x
   x = 1,627,938.27/1,569.37
6. Step 6: Final answer
   x = 1,037.32