Finding the Fourth Proportional to 1,491.83, 2,238.83 and 670.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.83 : 2,238.83 = 670.22 : x
2. Step 2: Convert to fraction form
   1,491.83/2,238.83 = 670.22/x
3. Step 3: Cross multiply
   1,491.83x = 2,238.83 × 670.22
4. Step 4: Simplify right side
   1,491.83x = 1,500,516.66
5. Step 5: Solve for x
   x = 1,500,516.66/1,491.83
6. Step 6: Final answer
   x = 1,005.82