Finding the Fourth Proportional to 1,558.95, 2,151.60 and 1,185.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.95 : 2,151.60 = 1,185.33 : x
2. Step 2: Convert to fraction form
   1,558.95/2,151.60 = 1,185.33/x
3. Step 3: Cross multiply
   1,558.95x = 2,151.60 × 1,185.33
4. Step 4: Simplify right side
   1,558.95x = 2,550,356.03
5. Step 5: Solve for x
   x = 2,550,356.03/1,558.95
6. Step 6: Final answer
   x = 1,635.94