Finding the Fourth Proportional to 1,407.67, 2,111.35 and 483.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.67 : 2,111.35 = 483.05 : x
2. Step 2: Convert to fraction form
   1,407.67/2,111.35 = 483.05/x
3. Step 3: Cross multiply
   1,407.67x = 2,111.35 × 483.05
4. Step 4: Simplify right side
   1,407.67x = 1,019,887.62
5. Step 5: Solve for x
   x = 1,019,887.62/1,407.67
6. Step 6: Final answer
   x = 724.52