Finding the Fourth Proportional to 1,545.50, 2,131.83 and 1,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,545.50 : 2,131.83 = 1,173.89 : x
2. Step 2: Convert to fraction form
   1,545.50/2,131.83 = 1,173.89/x
3. Step 3: Cross multiply
   1,545.50x = 2,131.83 × 1,173.89
4. Step 4: Simplify right side
   1,545.50x = 2,502,533.92
5. Step 5: Solve for x
   x = 2,502,533.92/1,545.50
6. Step 6: Final answer
   x = 1,619.24