Finding the Fourth Proportional to 2,807.86, 4,212.69 and 1,347.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.86 : 4,212.69 = 1,347.13 : x
2. Step 2: Convert to fraction form
   2,807.86/4,212.69 = 1,347.13/x
3. Step 3: Cross multiply
   2,807.86x = 4,212.69 × 1,347.13
4. Step 4: Simplify right side
   2,807.86x = 5,675,041.08
5. Step 5: Solve for x
   x = 5,675,041.08/2,807.86
6. Step 6: Final answer
   x = 2,021.13