Finding the Fourth Proportional to 1,490.92, 2,237.82 and 670.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.92 : 2,237.82 = 670.12 : x
2. Step 2: Convert to fraction form
   1,490.92/2,237.82 = 670.12/x
3. Step 3: Cross multiply
   1,490.92x = 2,237.82 × 670.12
4. Step 4: Simplify right side
   1,490.92x = 1,499,607.94
5. Step 5: Solve for x
   x = 1,499,607.94/1,490.92
6. Step 6: Final answer
   x = 1,005.83