Finding the Fourth Proportional to 3,460.86, 5,188.20 and 1,379.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,460.86 : 5,188.20 = 1,379.82 : x
2. Step 2: Convert to fraction form
   3,460.86/5,188.20 = 1,379.82/x
3. Step 3: Cross multiply
   3,460.86x = 5,188.20 × 1,379.82
4. Step 4: Simplify right side
   3,460.86x = 7,158,782.12
5. Step 5: Solve for x
   x = 7,158,782.12/3,460.86
6. Step 6: Final answer
   x = 2,068.50