Finding the Fourth Proportional to 1,566.63, 2,162.01 and 903.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.63 : 2,162.01 = 903.69 : x
2. Step 2: Convert to fraction form
   1,566.63/2,162.01 = 903.69/x
3. Step 3: Cross multiply
   1,566.63x = 2,162.01 × 903.69
4. Step 4: Simplify right side
   1,566.63x = 1,953,786.82
5. Step 5: Solve for x
   x = 1,953,786.82/1,566.63
6. Step 6: Final answer
   x = 1,247.13