Finding the Fourth Proportional to 2,611.10, 3,901.59 and 1,973.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.10 : 3,901.59 = 1,973.69 : x
2. Step 2: Convert to fraction form
   2,611.10/3,901.59 = 1,973.69/x
3. Step 3: Cross multiply
   2,611.10x = 3,901.59 × 1,973.69
4. Step 4: Simplify right side
   2,611.10x = 7,700,509.88
5. Step 5: Solve for x
   x = 7,700,509.88/2,611.10
6. Step 6: Final answer
   x = 2,949.14