Finding the Fourth Proportional to 1,010.76, 1,504.23 and 1,007.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.76 : 1,504.23 = 1,007.88 : x
2. Step 2: Convert to fraction form
   1,010.76/1,504.23 = 1,007.88/x
3. Step 3: Cross multiply
   1,010.76x = 1,504.23 × 1,007.88
4. Step 4: Simplify right side
   1,010.76x = 1,516,083.33
5. Step 5: Solve for x
   x = 1,516,083.33/1,010.76
6. Step 6: Final answer
   x = 1,499.94