Finding the Fourth Proportional to 2,921.02, 4,381.32 and 1,189.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,921.02 : 4,381.32 = 1,189.60 : x
2. Step 2: Convert to fraction form
   2,921.02/4,381.32 = 1,189.60/x
3. Step 3: Cross multiply
   2,921.02x = 4,381.32 × 1,189.60
4. Step 4: Simplify right side
   2,921.02x = 5,212,018.27
5. Step 5: Solve for x
   x = 5,212,018.27/2,921.02
6. Step 6: Final answer
   x = 1,784.31