Finding the Fourth Proportional to 1,408.16, 2,111.83 and 530.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.16 : 2,111.83 = 530.39 : x
2. Step 2: Convert to fraction form
   1,408.16/2,111.83 = 530.39/x
3. Step 3: Cross multiply
   1,408.16x = 2,111.83 × 530.39
4. Step 4: Simplify right side
   1,408.16x = 1,120,093.51
5. Step 5: Solve for x
   x = 1,120,093.51/1,408.16
6. Step 6: Final answer
   x = 795.43