Finding the Fourth Proportional to 2,830.48, 4,236.82 and 1,786.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.48 : 4,236.82 = 1,786.87 : x
2. Step 2: Convert to fraction form
   2,830.48/4,236.82 = 1,786.87/x
3. Step 3: Cross multiply
   2,830.48x = 4,236.82 × 1,786.87
4. Step 4: Simplify right side
   2,830.48x = 7,570,646.55
5. Step 5: Solve for x
   x = 7,570,646.55/2,830.48
6. Step 6: Final answer
   x = 2,674.69