Finding the Fourth Proportional to 1,566.31, 2,162.05 and 903.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.31 : 2,162.05 = 903.43 : x
2. Step 2: Convert to fraction form
   1,566.31/2,162.05 = 903.43/x
3. Step 3: Cross multiply
   1,566.31x = 2,162.05 × 903.43
4. Step 4: Simplify right side
   1,566.31x = 1,953,260.83
5. Step 5: Solve for x
   x = 1,953,260.83/1,566.31
6. Step 6: Final answer
   x = 1,247.05