Finding the Fourth Proportional to 1,565.82, 2,160.59 and 902.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565.82 : 2,160.59 = 902.54 : x
2. Step 2: Convert to fraction form
   1,565.82/2,160.59 = 902.54/x
3. Step 3: Cross multiply
   1,565.82x = 2,160.59 × 902.54
4. Step 4: Simplify right side
   1,565.82x = 1,950,019.79
5. Step 5: Solve for x
   x = 1,950,019.79/1,565.82
6. Step 6: Final answer
   x = 1,245.37