Finding the Fourth Proportional to 2,056.17, 3,080.37 and 1,221.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.17 : 3,080.37 = 1,221.48 : x
2. Step 2: Convert to fraction form
   2,056.17/3,080.37 = 1,221.48/x
3. Step 3: Cross multiply
   2,056.17x = 3,080.37 × 1,221.48
4. Step 4: Simplify right side
   2,056.17x = 3,762,610.35
5. Step 5: Solve for x
   x = 3,762,610.35/2,056.17
6. Step 6: Final answer
   x = 1,829.91