Finding the Fourth Proportional to 1,851.65, 2,555.69 and 1,179.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.65 : 2,555.69 = 1,179.32 : x
2. Step 2: Convert to fraction form
   1,851.65/2,555.69 = 1,179.32/x
3. Step 3: Cross multiply
   1,851.65x = 2,555.69 × 1,179.32
4. Step 4: Simplify right side
   1,851.65x = 3,013,957.66
5. Step 5: Solve for x
   x = 3,013,957.66/1,851.65
6. Step 6: Final answer
   x = 1,627.72