Finding the Fourth Proportional to 1,851.52, 2,555.20 and 1,230.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.52 : 2,555.20 = 1,230.08 : x
2. Step 2: Convert to fraction form
   1,851.52/2,555.20 = 1,230.08/x
3. Step 3: Cross multiply
   1,851.52x = 2,555.20 × 1,230.08
4. Step 4: Simplify right side
   1,851.52x = 3,143,100.42
5. Step 5: Solve for x
   x = 3,143,100.42/1,851.52
6. Step 6: Final answer
   x = 1,697.58