Finding the Fourth Proportional to 1,397.76, 1,931.04 and 1,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.76 : 1,931.04 = 1,300.56 : x
2. Step 2: Convert to fraction form
   1,397.76/1,931.04 = 1,300.56/x
3. Step 3: Cross multiply
   1,397.76x = 1,931.04 × 1,300.56
4. Step 4: Simplify right side
   1,397.76x = 2,511,433.38
5. Step 5: Solve for x
   x = 2,511,433.38/1,397.76
6. Step 6: Final answer
   x = 1,796.76