Finding the Fourth Proportional to 1,147.83, 1,723.55 and 929.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.83 : 1,723.55 = 929.31 : x
2. Step 2: Convert to fraction form
   1,147.83/1,723.55 = 929.31/x
3. Step 3: Cross multiply
   1,147.83x = 1,723.55 × 929.31
4. Step 4: Simplify right side
   1,147.83x = 1,601,707.60
5. Step 5: Solve for x
   x = 1,601,707.60/1,147.83
6. Step 6: Final answer
   x = 1,395.42