Finding the Fourth Proportional to 1,873.74, 2,585.76 and 1,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,873.74 : 2,585.76 = 1,128.12 : x
2. Step 2: Convert to fraction form
   1,873.74/2,585.76 = 1,128.12/x
3. Step 3: Cross multiply
   1,873.74x = 2,585.76 × 1,128.12
4. Step 4: Simplify right side
   1,873.74x = 2,917,047.57
5. Step 5: Solve for x
   x = 2,917,047.57/1,873.74
6. Step 6: Final answer
   x = 1,556.80