Finding the Fourth Proportional to 1,569.69, 2,165.55 and 906.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.69 : 2,165.55 = 906.41 : x
2. Step 2: Convert to fraction form
   1,569.69/2,165.55 = 906.41/x
3. Step 3: Cross multiply
   1,569.69x = 2,165.55 × 906.41
4. Step 4: Simplify right side
   1,569.69x = 1,962,865.35
5. Step 5: Solve for x
   x = 1,962,865.35/1,569.69
6. Step 6: Final answer
   x = 1,250.48