Finding the Fourth Proportional to 1,569.22, 2,165.59 and 906.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.22 : 2,165.59 = 906.07 : x
2. Step 2: Convert to fraction form
   1,569.22/2,165.59 = 906.07/x
3. Step 3: Cross multiply
   1,569.22x = 2,165.59 × 906.07
4. Step 4: Simplify right side
   1,569.22x = 1,962,168.45
5. Step 5: Solve for x
   x = 1,962,168.45/1,569.22
6. Step 6: Final answer
   x = 1,250.41