Finding the Fourth Proportional to 2,830.02, 4,245 and 1,186.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.02 : 4,245 = 1,186.50 : x
2. Step 2: Convert to fraction form
   2,830.02/4,245 = 1,186.50/x
3. Step 3: Cross multiply
   2,830.02x = 4,245 × 1,186.50
4. Step 4: Simplify right side
   2,830.02x = 5,036,692.50
5. Step 5: Solve for x
   x = 5,036,692.50/2,830.02
6. Step 6: Final answer
   x = 1,779.74