Finding the Fourth Proportional to 1,536.59, 2,120.50 and 873.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,536.59 : 2,120.50 = 873.49 : x
2. Step 2: Convert to fraction form
   1,536.59/2,120.50 = 873.49/x
3. Step 3: Cross multiply
   1,536.59x = 2,120.50 × 873.49
4. Step 4: Simplify right side
   1,536.59x = 1,852,224.43
5. Step 5: Solve for x
   x = 1,852,224.43/1,536.59
6. Step 6: Final answer
   x = 1,205.41