Finding the Fourth Proportional to 1,993.72, 2,988.18 and 897.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993.72 : 2,988.18 = 897.76 : x
2. Step 2: Convert to fraction form
   1,993.72/2,988.18 = 897.76/x
3. Step 3: Cross multiply
   1,993.72x = 2,988.18 × 897.76
4. Step 4: Simplify right side
   1,993.72x = 2,682,668.48
5. Step 5: Solve for x
   x = 2,682,668.48/1,993.72
6. Step 6: Final answer
   x = 1,345.56