Finding the Fourth Proportional to 2,611.52, 3,917.73 and 1,379.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.52 : 3,917.73 = 1,379.96 : x
2. Step 2: Convert to fraction form
   2,611.52/3,917.73 = 1,379.96/x
3. Step 3: Cross multiply
   2,611.52x = 3,917.73 × 1,379.96
4. Step 4: Simplify right side
   2,611.52x = 5,406,310.69
5. Step 5: Solve for x
   x = 5,406,310.69/2,611.52
6. Step 6: Final answer
   x = 2,070.18