Finding the Fourth Proportional to 2,379.63, 3,570.06 and 1,393.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.63 : 3,570.06 = 1,393.28 : x
2. Step 2: Convert to fraction form
   2,379.63/3,570.06 = 1,393.28/x
3. Step 3: Cross multiply
   2,379.63x = 3,570.06 × 1,393.28
4. Step 4: Simplify right side
   2,379.63x = 4,974,076.08
5. Step 5: Solve for x
   x = 4,974,076.08/2,379.63
6. Step 6: Final answer
   x = 2,090.27