Finding the Fourth Proportional to 1,785.76, 2,674.72 and 1,053.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,785.76 : 2,674.72 = 1,053.12 : x
2. Step 2: Convert to fraction form
   1,785.76/2,674.72 = 1,053.12/x
3. Step 3: Cross multiply
   1,785.76x = 2,674.72 × 1,053.12
4. Step 4: Simplify right side
   1,785.76x = 2,816,801.13
5. Step 5: Solve for x
   x = 2,816,801.13/1,785.76
6. Step 6: Final answer
   x = 1,577.37