Finding the Fourth Proportional to 1,988.47, 2,748.90 and 1,822.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988.47 : 2,748.90 = 1,822.42 : x
2. Step 2: Convert to fraction form
   1,988.47/2,748.90 = 1,822.42/x
3. Step 3: Cross multiply
   1,988.47x = 2,748.90 × 1,822.42
4. Step 4: Simplify right side
   1,988.47x = 5,009,650.34
5. Step 5: Solve for x
   x = 5,009,650.34/1,988.47
6. Step 6: Final answer
   x = 2,519.35