Finding the Fourth Proportional to 1,367.22, 1,887.54 and 902.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.22 : 1,887.54 = 902.28 : x
2. Step 2: Convert to fraction form
   1,367.22/1,887.54 = 902.28/x
3. Step 3: Cross multiply
   1,367.22x = 1,887.54 × 902.28
4. Step 4: Simplify right side
   1,367.22x = 1,703,089.59
5. Step 5: Solve for x
   x = 1,703,089.59/1,367.22
6. Step 6: Final answer
   x = 1,245.66