Finding the Fourth Proportional to 1,979.01, 2,981.72 and 1,791.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.01 : 2,981.72 = 1,791.63 : x
2. Step 2: Convert to fraction form
   1,979.01/2,981.72 = 1,791.63/x
3. Step 3: Cross multiply
   1,979.01x = 2,981.72 × 1,791.63
4. Step 4: Simplify right side
   1,979.01x = 5,342,150.20
5. Step 5: Solve for x
   x = 5,342,150.20/1,979.01
6. Step 6: Final answer
   x = 2,699.41