Finding the Fourth Proportional to 1,368.03, 2,061.21 and 1,238.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.03 : 2,061.21 = 1,238.18 : x
2. Step 2: Convert to fraction form
   1,368.03/2,061.21 = 1,238.18/x
3. Step 3: Cross multiply
   1,368.03x = 2,061.21 × 1,238.18
4. Step 4: Simplify right side
   1,368.03x = 2,552,138.69
5. Step 5: Solve for x
   x = 2,552,138.69/1,368.03
6. Step 6: Final answer
   x = 1,865.56