Finding the Fourth Proportional to 1,373.76, 1,895.40 and 1,078.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.76 : 1,895.40 = 1,078.11 : x
2. Step 2: Convert to fraction form
   1,373.76/1,895.40 = 1,078.11/x
3. Step 3: Cross multiply
   1,373.76x = 1,895.40 × 1,078.11
4. Step 4: Simplify right side
   1,373.76x = 2,043,449.69
5. Step 5: Solve for x
   x = 2,043,449.69/1,373.76
6. Step 6: Final answer
   x = 1,487.49