Finding the Fourth Proportional to 3,477.96, 4,801.86 and 2,153.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,477.96 : 4,801.86 = 2,153.61 : x
2. Step 2: Convert to fraction form
   3,477.96/4,801.86 = 2,153.61/x
3. Step 3: Cross multiply
   3,477.96x = 4,801.86 × 2,153.61
4. Step 4: Simplify right side
   3,477.96x = 10,341,333.71
5. Step 5: Solve for x
   x = 10,341,333.71/3,477.96
6. Step 6: Final answer
   x = 2,973.39