Finding the Fourth Proportional to 2,118.02, 2,922.75 and 1,173.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.02 : 2,922.75 = 1,173.78 : x
2. Step 2: Convert to fraction form
   2,118.02/2,922.75 = 1,173.78/x
3. Step 3: Cross multiply
   2,118.02x = 2,922.75 × 1,173.78
4. Step 4: Simplify right side
   2,118.02x = 3,430,665.50
5. Step 5: Solve for x
   x = 3,430,665.50/2,118.02
6. Step 6: Final answer
   x = 1,619.76