Finding the Fourth Proportional to 2,611.77, 3,917.69 and 1,052.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.77 : 3,917.69 = 1,052.48 : x
2. Step 2: Convert to fraction form
   2,611.77/3,917.69 = 1,052.48/x
3. Step 3: Cross multiply
   2,611.77x = 3,917.69 × 1,052.48
4. Step 4: Simplify right side
   2,611.77x = 4,123,265.52
5. Step 5: Solve for x
   x = 4,123,265.52/2,611.77
6. Step 6: Final answer
   x = 1,578.72