Finding the Fourth Proportional to 1,567.55, 2,162.85 and 904.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.55 : 2,162.85 = 904.35 : x
2. Step 2: Convert to fraction form
   1,567.55/2,162.85 = 904.35/x
3. Step 3: Cross multiply
   1,567.55x = 2,162.85 × 904.35
4. Step 4: Simplify right side
   1,567.55x = 1,955,973.40
5. Step 5: Solve for x
   x = 1,955,973.40/1,567.55
6. Step 6: Final answer
   x = 1,247.79