Finding the Fourth Proportional to 2,991.03, 4,485.77 and 1,259.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.03 : 4,485.77 = 1,259.31 : x
2. Step 2: Convert to fraction form
   2,991.03/4,485.77 = 1,259.31/x
3. Step 3: Cross multiply
   2,991.03x = 4,485.77 × 1,259.31
4. Step 4: Simplify right side
   2,991.03x = 5,648,968.72
5. Step 5: Solve for x
   x = 5,648,968.72/2,991.03
6. Step 6: Final answer
   x = 1,888.64