Finding the Fourth Proportional to 2,120.56, 2,919.72 and 1,926.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.56 : 2,919.72 = 1,926.16 : x
2. Step 2: Convert to fraction form
   2,120.56/2,919.72 = 1,926.16/x
3. Step 3: Cross multiply
   2,120.56x = 2,919.72 × 1,926.16
4. Step 4: Simplify right side
   2,120.56x = 5,623,847.88
5. Step 5: Solve for x
   x = 5,623,847.88/2,120.56
6. Step 6: Final answer
   x = 2,652.06