Finding the Fourth Proportional to 1,976.79, 2,947.16 and 1,926.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.79 : 2,947.16 = 1,926.30 : x
2. Step 2: Convert to fraction form
   1,976.79/2,947.16 = 1,926.30/x
3. Step 3: Cross multiply
   1,976.79x = 2,947.16 × 1,926.30
4. Step 4: Simplify right side
   1,976.79x = 5,677,114.31
5. Step 5: Solve for x
   x = 5,677,114.31/1,976.79
6. Step 6: Final answer
   x = 2,871.89