Finding the Fourth Proportional to 2,830.62, 4,245.72 and 1,187.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.62 : 4,245.72 = 1,187.10 : x
2. Step 2: Convert to fraction form
   2,830.62/4,245.72 = 1,187.10/x
3. Step 3: Cross multiply
   2,830.62x = 4,245.72 × 1,187.10
4. Step 4: Simplify right side
   2,830.62x = 5,040,094.21
5. Step 5: Solve for x
   x = 5,040,094.21/2,830.62
6. Step 6: Final answer
   x = 1,780.56