Finding the Fourth Proportional to 1,346.17, 1,855.15 and 972.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.17 : 1,855.15 = 972.46 : x
2. Step 2: Convert to fraction form
   1,346.17/1,855.15 = 972.46/x
3. Step 3: Cross multiply
   1,346.17x = 1,855.15 × 972.46
4. Step 4: Simplify right side
   1,346.17x = 1,804,059.17
5. Step 5: Solve for x
   x = 1,804,059.17/1,346.17
6. Step 6: Final answer
   x = 1,340.14