Finding the Fourth Proportional to 1,471.62, 2,196.90 and 1,420.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,471.62 : 2,196.90 = 1,420.38 : x
2. Step 2: Convert to fraction form
   1,471.62/2,196.90 = 1,420.38/x
3. Step 3: Cross multiply
   1,471.62x = 2,196.90 × 1,420.38
4. Step 4: Simplify right side
   1,471.62x = 3,120,432.82
5. Step 5: Solve for x
   x = 3,120,432.82/1,471.62
6. Step 6: Final answer
   x = 2,120.41