Finding the Fourth Proportional to 3,870.79, 5,343.90 and 2,693.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.79 : 5,343.90 = 2,693.46 : x
2. Step 2: Convert to fraction form
   3,870.79/5,343.90 = 2,693.46/x
3. Step 3: Cross multiply
   3,870.79x = 5,343.90 × 2,693.46
4. Step 4: Simplify right side
   3,870.79x = 14,393,580.89
5. Step 5: Solve for x
   x = 14,393,580.89/3,870.79
6. Step 6: Final answer
   x = 3,718.51