Finding the Fourth Proportional to 1,851.74, 2,555.55 and 1,153.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.74 : 2,555.55 = 1,153.22 : x
2. Step 2: Convert to fraction form
   1,851.74/2,555.55 = 1,153.22/x
3. Step 3: Cross multiply
   1,851.74x = 2,555.55 × 1,153.22
4. Step 4: Simplify right side
   1,851.74x = 2,947,111.37
5. Step 5: Solve for x
   x = 2,947,111.37/1,851.74
6. Step 6: Final answer
   x = 1,591.54