Finding the Fourth Proportional to 2,679.10, 4,019.01 and 947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.10 : 4,019.01 = 947.50 : x
2. Step 2: Convert to fraction form
   2,679.10/4,019.01 = 947.50/x
3. Step 3: Cross multiply
   2,679.10x = 4,019.01 × 947.50
4. Step 4: Simplify right side
   2,679.10x = 3,808,011.98
5. Step 5: Solve for x
   x = 3,808,011.98/2,679.10
6. Step 6: Final answer
   x = 1,421.38