Finding the Fourth Proportional to 2,830.50, 4,247.10 and 1,186.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.50 : 4,247.10 = 1,186.98 : x
2. Step 2: Convert to fraction form
   2,830.50/4,247.10 = 1,186.98/x
3. Step 3: Cross multiply
   2,830.50x = 4,247.10 × 1,186.98
4. Step 4: Simplify right side
   2,830.50x = 5,041,222.76
5. Step 5: Solve for x
   x = 5,041,222.76/2,830.50
6. Step 6: Final answer
   x = 1,781.04