Finding the Fourth Proportional to 1,566.89, 2,162.54 and 903.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.89 : 2,162.54 = 903.61 : x
2. Step 2: Convert to fraction form
   1,566.89/2,162.54 = 903.61/x
3. Step 3: Cross multiply
   1,566.89x = 2,162.54 × 903.61
4. Step 4: Simplify right side
   1,566.89x = 1,954,088.25
5. Step 5: Solve for x
   x = 1,954,088.25/1,566.89
6. Step 6: Final answer
   x = 1,247.11