Finding the Fourth Proportional to 1,573.75, 2,166.50 and 1,180.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.75 : 2,166.50 = 1,180.09 : x
2. Step 2: Convert to fraction form
   1,573.75/2,166.50 = 1,180.09/x
3. Step 3: Cross multiply
   1,573.75x = 2,166.50 × 1,180.09
4. Step 4: Simplify right side
   1,573.75x = 2,556,648.25
5. Step 5: Solve for x
   x = 2,556,648.25/1,573.75
6. Step 6: Final answer
   x = 1,624.56