Finding the Fourth Proportional to 1,654.05, 2,480.94 and 874.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,654.05 : 2,480.94 = 874.56 : x
2. Step 2: Convert to fraction form
   1,654.05/2,480.94 = 874.56/x
3. Step 3: Cross multiply
   1,654.05x = 2,480.94 × 874.56
4. Step 4: Simplify right side
   1,654.05x = 2,169,730.89
5. Step 5: Solve for x
   x = 2,169,730.89/1,654.05
6. Step 6: Final answer
   x = 1,311.77