Finding the Fourth Proportional to 1,852.63, 2,556.61 and 1,013.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.63 : 2,556.61 = 1,013.33 : x
2. Step 2: Convert to fraction form
   1,852.63/2,556.61 = 1,013.33/x
3. Step 3: Cross multiply
   1,852.63x = 2,556.61 × 1,013.33
4. Step 4: Simplify right side
   1,852.63x = 2,590,693.47
5. Step 5: Solve for x
   x = 2,590,693.47/1,852.63
6. Step 6: Final answer
   x = 1,398.39