Finding the Fourth Proportional to 2,739.63, 3,780.69 and 1,560.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,739.63 : 3,780.69 = 1,560.81 : x
2. Step 2: Convert to fraction form
   2,739.63/3,780.69 = 1,560.81/x
3. Step 3: Cross multiply
   2,739.63x = 3,780.69 × 1,560.81
4. Step 4: Simplify right side
   2,739.63x = 5,900,938.76
5. Step 5: Solve for x
   x = 5,900,938.76/2,739.63
6. Step 6: Final answer
   x = 2,153.92