Finding the Fourth Proportional to 1,388.04, 2,082.78 and 1,093.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.04 : 2,082.78 = 1,093.74 : x
2. Step 2: Convert to fraction form
   1,388.04/2,082.78 = 1,093.74/x
3. Step 3: Cross multiply
   1,388.04x = 2,082.78 × 1,093.74
4. Step 4: Simplify right side
   1,388.04x = 2,278,019.80
5. Step 5: Solve for x
   x = 2,278,019.80/1,388.04
6. Step 6: Final answer
   x = 1,641.18