Finding the Fourth Proportional to 1,368.70, 1,888.24 and 897.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.70 : 1,888.24 = 897.18 : x
2. Step 2: Convert to fraction form
   1,368.70/1,888.24 = 897.18/x
3. Step 3: Cross multiply
   1,368.70x = 1,888.24 × 897.18
4. Step 4: Simplify right side
   1,368.70x = 1,694,091.16
5. Step 5: Solve for x
   x = 1,694,091.16/1,368.70
6. Step 6: Final answer
   x = 1,237.74