Finding the Fourth Proportional to 2,928.49, 4,389.86 and 1,173.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.49 : 4,389.86 = 1,173.02 : x
2. Step 2: Convert to fraction form
   2,928.49/4,389.86 = 1,173.02/x
3. Step 3: Cross multiply
   2,928.49x = 4,389.86 × 1,173.02
4. Step 4: Simplify right side
   2,928.49x = 5,149,374.56
5. Step 5: Solve for x
   x = 5,149,374.56/2,928.49
6. Step 6: Final answer
   x = 1,758.37