Finding the Fourth Proportional to 1,300.56, 1,939.60 and 1,106.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.56 : 1,939.60 = 1,106.76 : x
2. Step 2: Convert to fraction form
   1,300.56/1,939.60 = 1,106.76/x
3. Step 3: Cross multiply
   1,300.56x = 1,939.60 × 1,106.76
4. Step 4: Simplify right side
   1,300.56x = 2,146,671.70
5. Step 5: Solve for x
   x = 2,146,671.70/1,300.56
6. Step 6: Final answer
   x = 1,650.57