Finding the Fourth Proportional to 2,390.12, 3,298.56 and 1,342.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.12 : 3,298.56 = 1,342.24 : x
2. Step 2: Convert to fraction form
   2,390.12/3,298.56 = 1,342.24/x
3. Step 3: Cross multiply
   2,390.12x = 3,298.56 × 1,342.24
4. Step 4: Simplify right side
   2,390.12x = 4,427,459.17
5. Step 5: Solve for x
   x = 4,427,459.17/2,390.12
6. Step 6: Final answer
   x = 1,852.40