Finding the Fourth Proportional to 2,830.18, 4,245.47 and 1,185.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.18 : 4,245.47 = 1,185.07 : x
2. Step 2: Convert to fraction form
   2,830.18/4,245.47 = 1,185.07/x
3. Step 3: Cross multiply
   2,830.18x = 4,245.47 × 1,185.07
4. Step 4: Simplify right side
   2,830.18x = 5,031,173.21
5. Step 5: Solve for x
   x = 5,031,173.21/2,830.18
6. Step 6: Final answer
   x = 1,777.69