Finding the Fourth Proportional to 2,987.13, 4,482.69 and 2,964.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,987.13 : 4,482.69 = 2,964.05 : x
2. Step 2: Convert to fraction form
   2,987.13/4,482.69 = 2,964.05/x
3. Step 3: Cross multiply
   2,987.13x = 4,482.69 × 2,964.05
4. Step 4: Simplify right side
   2,987.13x = 13,286,917.29
5. Step 5: Solve for x
   x = 13,286,917.29/2,987.13
6. Step 6: Final answer
   x = 4,448.05