Finding the Fourth Proportional to 1,410.74, 2,116.12 and 436.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.74 : 2,116.12 = 436.82 : x
2. Step 2: Convert to fraction form
   1,410.74/2,116.12 = 436.82/x
3. Step 3: Cross multiply
   1,410.74x = 2,116.12 × 436.82
4. Step 4: Simplify right side
   1,410.74x = 924,363.54
5. Step 5: Solve for x
   x = 924,363.54/1,410.74
6. Step 6: Final answer
   x = 655.23