Finding the Fourth Proportional to 2,719.63, 4,081.20 and 1,422.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,719.63 : 4,081.20 = 1,422.01 : x
2. Step 2: Convert to fraction form
   2,719.63/4,081.20 = 1,422.01/x
3. Step 3: Cross multiply
   2,719.63x = 4,081.20 × 1,422.01
4. Step 4: Simplify right side
   2,719.63x = 5,803,507.21
5. Step 5: Solve for x
   x = 5,803,507.21/2,719.63
6. Step 6: Final answer
   x = 2,133.93