Finding the Fourth Proportional to 2,788.37, 4,181.76 and 1,122.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.37 : 4,181.76 = 1,122.50 : x
2. Step 2: Convert to fraction form
   2,788.37/4,181.76 = 1,122.50/x
3. Step 3: Cross multiply
   2,788.37x = 4,181.76 × 1,122.50
4. Step 4: Simplify right side
   2,788.37x = 4,694,025.60
5. Step 5: Solve for x
   x = 4,694,025.60/2,788.37
6. Step 6: Final answer
   x = 1,683.43