Finding the Fourth Proportional to 2,118.63, 2,922.72 and 1,372.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.63 : 2,922.72 = 1,372.83 : x
2. Step 2: Convert to fraction form
   2,118.63/2,922.72 = 1,372.83/x
3. Step 3: Cross multiply
   2,118.63x = 2,922.72 × 1,372.83
4. Step 4: Simplify right side
   2,118.63x = 4,012,397.70
5. Step 5: Solve for x
   x = 4,012,397.70/2,118.63
6. Step 6: Final answer
   x = 1,893.86