Finding the Fourth Proportional to 2,147.58, 3,216.09 and 1,048.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.58 : 3,216.09 = 1,048.40 : x
2. Step 2: Convert to fraction form
   2,147.58/3,216.09 = 1,048.40/x
3. Step 3: Cross multiply
   2,147.58x = 3,216.09 × 1,048.40
4. Step 4: Simplify right side
   2,147.58x = 3,371,748.76
5. Step 5: Solve for x
   x = 3,371,748.76/2,147.58
6. Step 6: Final answer
   x = 1,570.02