Finding the Fourth Proportional to 1,543.72, 2,130.32 and 835.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.72 : 2,130.32 = 835.56 : x
2. Step 2: Convert to fraction form
   1,543.72/2,130.32 = 835.56/x
3. Step 3: Cross multiply
   1,543.72x = 2,130.32 × 835.56
4. Step 4: Simplify right side
   1,543.72x = 1,780,006.00
5. Step 5: Solve for x
   x = 1,780,006.00/1,543.72
6. Step 6: Final answer
   x = 1,153.06