Finding the Fourth Proportional to 1,871.72, 2,580.60 and 1,233.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.72 : 2,580.60 = 1,233.56 : x
2. Step 2: Convert to fraction form
   1,871.72/2,580.60 = 1,233.56/x
3. Step 3: Cross multiply
   1,871.72x = 2,580.60 × 1,233.56
4. Step 4: Simplify right side
   1,871.72x = 3,183,333.79
5. Step 5: Solve for x
   x = 3,183,333.79/1,871.72
6. Step 6: Final answer
   x = 1,700.75