Finding the Fourth Proportional to 2,878.51, 4,314.86 and 1,122.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.51 : 4,314.86 = 1,122.42 : x
2. Step 2: Convert to fraction form
   2,878.51/4,314.86 = 1,122.42/x
3. Step 3: Cross multiply
   2,878.51x = 4,314.86 × 1,122.42
4. Step 4: Simplify right side
   2,878.51x = 4,843,085.16
5. Step 5: Solve for x
   x = 4,843,085.16/2,878.51
6. Step 6: Final answer
   x = 1,682.50