Finding the Fourth Proportional to 1,984.15, 2,967.72 and 1,931.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.15 : 2,967.72 = 1,931.10 : x
2. Step 2: Convert to fraction form
   1,984.15/2,967.72 = 1,931.10/x
3. Step 3: Cross multiply
   1,984.15x = 2,967.72 × 1,931.10
4. Step 4: Simplify right side
   1,984.15x = 5,730,964.09
5. Step 5: Solve for x
   x = 5,730,964.09/1,984.15
6. Step 6: Final answer
   x = 2,888.37