Finding the Fourth Proportional to 1,567.23, 2,162.79 and 904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.23 : 2,162.79 = 904.10 : x
2. Step 2: Convert to fraction form
   1,567.23/2,162.79 = 904.10/x
3. Step 3: Cross multiply
   1,567.23x = 2,162.79 × 904.10
4. Step 4: Simplify right side
   1,567.23x = 1,955,367.63
5. Step 5: Solve for x
   x = 1,955,367.63/1,567.23
6. Step 6: Final answer
   x = 1,247.66