Finding the Fourth Proportional to 1,569.45, 2,165.89 and 906.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.45 : 2,165.89 = 906.29 : x
2. Step 2: Convert to fraction form
   1,569.45/2,165.89 = 906.29/x
3. Step 3: Cross multiply
   1,569.45x = 2,165.89 × 906.29
4. Step 4: Simplify right side
   1,569.45x = 1,962,924.45
5. Step 5: Solve for x
   x = 1,962,924.45/1,569.45
6. Step 6: Final answer
   x = 1,250.71