Finding the Fourth Proportional to 1,367.90, 1,888.45 and 889.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.90 : 1,888.45 = 889.95 : x
2. Step 2: Convert to fraction form
   1,367.90/1,888.45 = 889.95/x
3. Step 3: Cross multiply
   1,367.90x = 1,888.45 × 889.95
4. Step 4: Simplify right side
   1,367.90x = 1,680,626.72
5. Step 5: Solve for x
   x = 1,680,626.72/1,367.90
6. Step 6: Final answer
   x = 1,228.62