Finding the Fourth Proportional to 2,980.26, 4,111.81 and 1,985.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.26 : 4,111.81 = 1,985.72 : x
2. Step 2: Convert to fraction form
   2,980.26/4,111.81 = 1,985.72/x
3. Step 3: Cross multiply
   2,980.26x = 4,111.81 × 1,985.72
4. Step 4: Simplify right side
   2,980.26x = 8,164,877.83
5. Step 5: Solve for x
   x = 8,164,877.83/2,980.26
6. Step 6: Final answer
   x = 2,739.65