Finding the Fourth Proportional to 2,678.86, 3,697.68 and 1,559.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.86 : 3,697.68 = 1,559.58 : x
2. Step 2: Convert to fraction form
   2,678.86/3,697.68 = 1,559.58/x
3. Step 3: Cross multiply
   2,678.86x = 3,697.68 × 1,559.58
4. Step 4: Simplify right side
   2,678.86x = 5,766,827.77
5. Step 5: Solve for x
   x = 5,766,827.77/2,678.86
6. Step 6: Final answer
   x = 2,152.72