Finding the Fourth Proportional to 2,870.68, 3,954.54 and 1,984.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.68 : 3,954.54 = 1,984.96 : x
2. Step 2: Convert to fraction form
   2,870.68/3,954.54 = 1,984.96/x
3. Step 3: Cross multiply
   2,870.68x = 3,954.54 × 1,984.96
4. Step 4: Simplify right side
   2,870.68x = 7,849,603.72
5. Step 5: Solve for x
   x = 7,849,603.72/2,870.68
6. Step 6: Final answer
   x = 2,734.41