Finding the Fourth Proportional to 3,776.31, 5,211.09 and 2,097.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,776.31 : 5,211.09 = 2,097.72 : x
2. Step 2: Convert to fraction form
   3,776.31/5,211.09 = 2,097.72/x
3. Step 3: Cross multiply
   3,776.31x = 5,211.09 × 2,097.72
4. Step 4: Simplify right side
   3,776.31x = 10,931,407.71
5. Step 5: Solve for x
   x = 10,931,407.71/3,776.31
6. Step 6: Final answer
   x = 2,894.73