Finding the Fourth Proportional to 1,945.28, 2,685.72 and 1,199.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.28 : 2,685.72 = 1,199.93 : x
2. Step 2: Convert to fraction form
   1,945.28/2,685.72 = 1,199.93/x
3. Step 3: Cross multiply
   1,945.28x = 2,685.72 × 1,199.93
4. Step 4: Simplify right side
   1,945.28x = 3,222,676.00
5. Step 5: Solve for x
   x = 3,222,676.00/1,945.28
6. Step 6: Final answer
   x = 1,656.66