Finding the Fourth Proportional to 3,978.01, 5,966.89 and 1,899.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.01 : 5,966.89 = 1,899.48 : x
2. Step 2: Convert to fraction form
   3,978.01/5,966.89 = 1,899.48/x
3. Step 3: Cross multiply
   3,978.01x = 5,966.89 × 1,899.48
4. Step 4: Simplify right side
   3,978.01x = 11,333,988.22
5. Step 5: Solve for x
   x = 11,333,988.22/3,978.01
6. Step 6: Final answer
   x = 2,849.16