Finding the Fourth Proportional to 2,158.63, 2,977.48 and 1,994.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.63 : 2,977.48 = 1,994.59 : x
2. Step 2: Convert to fraction form
   2,158.63/2,977.48 = 1,994.59/x
3. Step 3: Cross multiply
   2,158.63x = 2,977.48 × 1,994.59
4. Step 4: Simplify right side
   2,158.63x = 5,938,851.83
5. Step 5: Solve for x
   x = 5,938,851.83/2,158.63
6. Step 6: Final answer
   x = 2,751.21