Finding the Fourth Proportional to 1,046.90, 1,572.15 and 683.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.90 : 1,572.15 = 683.30 : x
2. Step 2: Convert to fraction form
   1,046.90/1,572.15 = 683.30/x
3. Step 3: Cross multiply
   1,046.90x = 1,572.15 × 683.30
4. Step 4: Simplify right side
   1,046.90x = 1,074,250.10
5. Step 5: Solve for x
   x = 1,074,250.10/1,046.90
6. Step 6: Final answer
   x = 1,026.12