Finding the Fourth Proportional to 2,047.61, 3,070.96 and 814.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.61 : 3,070.96 = 814.69 : x
2. Step 2: Convert to fraction form
   2,047.61/3,070.96 = 814.69/x
3. Step 3: Cross multiply
   2,047.61x = 3,070.96 × 814.69
4. Step 4: Simplify right side
   2,047.61x = 2,501,880.40
5. Step 5: Solve for x
   x = 2,501,880.40/2,047.61
6. Step 6: Final answer
   x = 1,221.85