Finding the Fourth Proportional to 1,513.08, 2,087.37 and 923.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.08 : 2,087.37 = 923.50 : x
2. Step 2: Convert to fraction form
   1,513.08/2,087.37 = 923.50/x
3. Step 3: Cross multiply
   1,513.08x = 2,087.37 × 923.50
4. Step 4: Simplify right side
   1,513.08x = 1,927,688.80
5. Step 5: Solve for x
   x = 1,927,688.80/1,513.08
6. Step 6: Final answer
   x = 1,274.02