Finding the Fourth Proportional to 3,323.15, 4,985.56 and 1,131.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,323.15 : 4,985.56 = 1,131.90 : x
2. Step 2: Convert to fraction form
   3,323.15/4,985.56 = 1,131.90/x
3. Step 3: Cross multiply
   3,323.15x = 4,985.56 × 1,131.90
4. Step 4: Simplify right side
   3,323.15x = 5,643,155.36
5. Step 5: Solve for x
   x = 5,643,155.36/3,323.15
6. Step 6: Final answer
   x = 1,698.13