Finding the Fourth Proportional to 2,042.31, 3,061.63 and 1,980.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.31 : 3,061.63 = 1,980.34 : x
2. Step 2: Convert to fraction form
   2,042.31/3,061.63 = 1,980.34/x
3. Step 3: Cross multiply
   2,042.31x = 3,061.63 × 1,980.34
4. Step 4: Simplify right side
   2,042.31x = 6,063,068.35
5. Step 5: Solve for x
   x = 6,063,068.35/2,042.31
6. Step 6: Final answer
   x = 2,968.73