Finding the Fourth Proportional to 2,134.57, 2,945.63 and 1,190.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,134.57 : 2,945.63 = 1,190.31 : x
2. Step 2: Convert to fraction form
   2,134.57/2,945.63 = 1,190.31/x
3. Step 3: Cross multiply
   2,134.57x = 2,945.63 × 1,190.31
4. Step 4: Simplify right side
   2,134.57x = 3,506,212.85
5. Step 5: Solve for x
   x = 3,506,212.85/2,134.57
6. Step 6: Final answer
   x = 1,642.59