Finding the Fourth Proportional to 2,741.90, 3,784.28 and 2,156.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,741.90 : 3,784.28 = 2,156.90 : x
2. Step 2: Convert to fraction form
   2,741.90/3,784.28 = 2,156.90/x
3. Step 3: Cross multiply
   2,741.90x = 3,784.28 × 2,156.90
4. Step 4: Simplify right side
   2,741.90x = 8,162,283.83
5. Step 5: Solve for x
   x = 8,162,283.83/2,741.90
6. Step 6: Final answer
   x = 2,976.88