Finding the Fourth Proportional to 1,566.91, 2,162.32 and 903.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.91 : 2,162.32 = 903.72 : x
2. Step 2: Convert to fraction form
   1,566.91/2,162.32 = 903.72/x
3. Step 3: Cross multiply
   1,566.91x = 2,162.32 × 903.72
4. Step 4: Simplify right side
   1,566.91x = 1,954,131.83
5. Step 5: Solve for x
   x = 1,954,131.83/1,566.91
6. Step 6: Final answer
   x = 1,247.12