Finding the Fourth Proportional to 1,873.59, 2,586.59 and 1,127.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,873.59 : 2,586.59 = 1,127.72 : x
2. Step 2: Convert to fraction form
   1,873.59/2,586.59 = 1,127.72/x
3. Step 3: Cross multiply
   1,873.59x = 2,586.59 × 1,127.72
4. Step 4: Simplify right side
   1,873.59x = 2,916,930.70
5. Step 5: Solve for x
   x = 2,916,930.70/1,873.59
6. Step 6: Final answer
   x = 1,556.87