Finding the Fourth Proportional to 1,453.81, 2,171.87 and 929.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.81 : 2,171.87 = 929.62 : x
2. Step 2: Convert to fraction form
   1,453.81/2,171.87 = 929.62/x
3. Step 3: Cross multiply
   1,453.81x = 2,171.87 × 929.62
4. Step 4: Simplify right side
   1,453.81x = 2,019,013.79
5. Step 5: Solve for x
   x = 2,019,013.79/1,453.81
6. Step 6: Final answer
   x = 1,388.77