Finding the Fourth Proportional to 1,994.07, 2,987.86 and 1,173.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,994.07 : 2,987.86 = 1,173.09 : x
2. Step 2: Convert to fraction form
   1,994.07/2,987.86 = 1,173.09/x
3. Step 3: Cross multiply
   1,994.07x = 2,987.86 × 1,173.09
4. Step 4: Simplify right side
   1,994.07x = 3,505,028.69
5. Step 5: Solve for x
   x = 3,505,028.69/1,994.07
6. Step 6: Final answer
   x = 1,757.73