Finding the Fourth Proportional to 2,830.89, 4,246.49 and 1,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.89 : 4,246.49 = 1,187.50 : x
2. Step 2: Convert to fraction form
   2,830.89/4,246.49 = 1,187.50/x
3. Step 3: Cross multiply
   2,830.89x = 4,246.49 × 1,187.50
4. Step 4: Simplify right side
   2,830.89x = 5,042,706.88
5. Step 5: Solve for x
   x = 5,042,706.88/2,830.89
6. Step 6: Final answer
   x = 1,781.32