Finding the Fourth Proportional to 1,411.01, 2,116.72 and 437.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.01 : 2,116.72 = 437.19 : x
2. Step 2: Convert to fraction form
   1,411.01/2,116.72 = 437.19/x
3. Step 3: Cross multiply
   1,411.01x = 2,116.72 × 437.19
4. Step 4: Simplify right side
   1,411.01x = 925,408.82
5. Step 5: Solve for x
   x = 925,408.82/1,411.01
6. Step 6: Final answer
   x = 655.85