Finding the Fourth Proportional to 3,368.78, 5,053.72 and 1,147.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,368.78 : 5,053.72 = 1,147.81 : x
2. Step 2: Convert to fraction form
   3,368.78/5,053.72 = 1,147.81/x
3. Step 3: Cross multiply
   3,368.78x = 5,053.72 × 1,147.81
4. Step 4: Simplify right side
   3,368.78x = 5,800,710.35
5. Step 5: Solve for x
   x = 5,800,710.35/3,368.78
6. Step 6: Final answer
   x = 1,721.90