Finding the Fourth Proportional to 1,945.42, 2,684.59 and 1,199.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.42 : 2,684.59 = 1,199.45 : x
2. Step 2: Convert to fraction form
   1,945.42/2,684.59 = 1,199.45/x
3. Step 3: Cross multiply
   1,945.42x = 2,684.59 × 1,199.45
4. Step 4: Simplify right side
   1,945.42x = 3,220,041.94
5. Step 5: Solve for x
   x = 3,220,041.94/1,945.42
6. Step 6: Final answer
   x = 1,655.19