Finding the Fourth Proportional to 1,372.16, 1,889.78 and 1,185.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.16 : 1,889.78 = 1,185.59 : x
2. Step 2: Convert to fraction form
   1,372.16/1,889.78 = 1,185.59/x
3. Step 3: Cross multiply
   1,372.16x = 1,889.78 × 1,185.59
4. Step 4: Simplify right side
   1,372.16x = 2,240,488.89
5. Step 5: Solve for x
   x = 2,240,488.89/1,372.16
6. Step 6: Final answer
   x = 1,632.82