Finding the Fourth Proportional to 1,127.29, 1,689.46 and 607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.29 : 1,689.46 = 607.50 : x
2. Step 2: Convert to fraction form
   1,127.29/1,689.46 = 607.50/x
3. Step 3: Cross multiply
   1,127.29x = 1,689.46 × 607.50
4. Step 4: Simplify right side
   1,127.29x = 1,026,345.43
5. Step 5: Solve for x
   x = 1,026,345.43/1,127.29
6. Step 6: Final answer
   x = 910.45