Finding the Fourth Proportional to 2,572.83, 3,858.64 and 1,185.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.83 : 3,858.64 = 1,185.30 : x
2. Step 2: Convert to fraction form
   2,572.83/3,858.64 = 1,185.30/x
3. Step 3: Cross multiply
   2,572.83x = 3,858.64 × 1,185.30
4. Step 4: Simplify right side
   2,572.83x = 4,573,643.03
5. Step 5: Solve for x
   x = 4,573,643.03/2,572.83
6. Step 6: Final answer
   x = 1,777.67