Finding the Fourth Proportional to 1,339.30, 1,847.00 and 918.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.30 : 1,847.00 = 918.91 : x
2. Step 2: Convert to fraction form
   1,339.30/1,847.00 = 918.91/x
3. Step 3: Cross multiply
   1,339.30x = 1,847.00 × 918.91
4. Step 4: Simplify right side
   1,339.30x = 1,697,231.38
5. Step 5: Solve for x
   x = 1,697,231.38/1,339.30
6. Step 6: Final answer
   x = 1,267.25