Finding the Fourth Proportional to 3,128.39, 4,316.83 and 1,784.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.39 : 4,316.83 = 1,784.04 : x
2. Step 2: Convert to fraction form
   3,128.39/4,316.83 = 1,784.04/x
3. Step 3: Cross multiply
   3,128.39x = 4,316.83 × 1,784.04
4. Step 4: Simplify right side
   3,128.39x = 7,701,388.47
5. Step 5: Solve for x
   x = 7,701,388.47/3,128.39
6. Step 6: Final answer
   x = 2,461.78