Finding the Fourth Proportional to 1,852.55, 2,556.59 and 1,013.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.55 : 2,556.59 = 1,013.28 : x
2. Step 2: Convert to fraction form
   1,852.55/2,556.59 = 1,013.28/x
3. Step 3: Cross multiply
   1,852.55x = 2,556.59 × 1,013.28
4. Step 4: Simplify right side
   1,852.55x = 2,590,551.28
5. Step 5: Solve for x
   x = 2,590,551.28/1,852.55
6. Step 6: Final answer
   x = 1,398.37