Finding the Fourth Proportional to 2,611.31, 3,912.05 and 1,293.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.31 : 3,912.05 = 1,293.53 : x
2. Step 2: Convert to fraction form
   2,611.31/3,912.05 = 1,293.53/x
3. Step 3: Cross multiply
   2,611.31x = 3,912.05 × 1,293.53
4. Step 4: Simplify right side
   2,611.31x = 5,060,337.71
5. Step 5: Solve for x
   x = 5,060,337.71/2,611.31
6. Step 6: Final answer
   x = 1,937.86