Finding the Fourth Proportional to 2,298.76, 3,171.35 and 1,402.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.76 : 3,171.35 = 1,402.20 : x
2. Step 2: Convert to fraction form
   2,298.76/3,171.35 = 1,402.20/x
3. Step 3: Cross multiply
   2,298.76x = 3,171.35 × 1,402.20
4. Step 4: Simplify right side
   2,298.76x = 4,446,870.48
5. Step 5: Solve for x
   x = 4,446,870.48/2,298.76
6. Step 6: Final answer
   x = 1,934.47