Finding the Fourth Proportional to 1,345.34, 1,855.41 and 971.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.34 : 1,855.41 = 971.73 : x
2. Step 2: Convert to fraction form
   1,345.34/1,855.41 = 971.73/x
3. Step 3: Cross multiply
   1,345.34x = 1,855.41 × 971.73
4. Step 4: Simplify right side
   1,345.34x = 1,802,953.92
5. Step 5: Solve for x
   x = 1,802,953.92/1,345.34
6. Step 6: Final answer
   x = 1,340.14