Finding the Fourth Proportional to 1,513.30, 2,088.21 and 923.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.30 : 2,088.21 = 923.71 : x
2. Step 2: Convert to fraction form
   1,513.30/2,088.21 = 923.71/x
3. Step 3: Cross multiply
   1,513.30x = 2,088.21 × 923.71
4. Step 4: Simplify right side
   1,513.30x = 1,928,900.46
5. Step 5: Solve for x
   x = 1,928,900.46/1,513.30
6. Step 6: Final answer
   x = 1,274.63