Finding the Fourth Proportional to 1,543.83, 2,129.89 and 984.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.83 : 2,129.89 = 984.21 : x
2. Step 2: Convert to fraction form
   1,543.83/2,129.89 = 984.21/x
3. Step 3: Cross multiply
   1,543.83x = 2,129.89 × 984.21
4. Step 4: Simplify right side
   1,543.83x = 2,096,259.04
5. Step 5: Solve for x
   x = 2,096,259.04/1,543.83
6. Step 6: Final answer
   x = 1,357.83