Finding the Fourth Proportional to 3,479.84, 4,801.71 and 2,153.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,479.84 : 4,801.71 = 2,153.56 : x
2. Step 2: Convert to fraction form
   3,479.84/4,801.71 = 2,153.56/x
3. Step 3: Cross multiply
   3,479.84x = 4,801.71 × 2,153.56
4. Step 4: Simplify right side
   3,479.84x = 10,340,770.59
5. Step 5: Solve for x
   x = 10,340,770.59/3,479.84
6. Step 6: Final answer
   x = 2,971.62