Finding the Fourth Proportional to 3,436.74, 5,155.32 and 971.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,436.74 : 5,155.32 = 971.76 : x
2. Step 2: Convert to fraction form
   3,436.74/5,155.32 = 971.76/x
3. Step 3: Cross multiply
   3,436.74x = 5,155.32 × 971.76
4. Step 4: Simplify right side
   3,436.74x = 5,009,733.76
5. Step 5: Solve for x
   x = 5,009,733.76/3,436.74
6. Step 6: Final answer
   x = 1,457.70