Finding the Fourth Proportional to 1,410.95, 2,116.82 and 423.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.95 : 2,116.82 = 423.83 : x
2. Step 2: Convert to fraction form
   1,410.95/2,116.82 = 423.83/x
3. Step 3: Cross multiply
   1,410.95x = 2,116.82 × 423.83
4. Step 4: Simplify right side
   1,410.95x = 897,178.17
5. Step 5: Solve for x
   x = 897,178.17/1,410.95
6. Step 6: Final answer
   x = 635.87