Finding the Fourth Proportional to 3,189.86, 4,779.91 and 2,146.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,189.86 : 4,779.91 = 2,146.00 : x
2. Step 2: Convert to fraction form
   3,189.86/4,779.91 = 2,146.00/x
3. Step 3: Cross multiply
   3,189.86x = 4,779.91 × 2,146.00
4. Step 4: Simplify right side
   3,189.86x = 10,257,652.23
5. Step 5: Solve for x
   x = 10,257,652.23/3,189.86
6. Step 6: Final answer
   x = 3,215.71