Finding the Fourth Proportional to 687,606.32, 948,881.72 and 381,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   687,606.32 : 948,881.72 = 381,664.72 : x
2. Step 2: Convert to fraction form
   687,606.32/948,881.72 = 381,664.72/x
3. Step 3: Cross multiply
   687,606.32x = 948,881.72 × 381,664.72
4. Step 4: Simplify right side
   687,606.32x = 362,154,675,976.92
5. Step 5: Solve for x
   x = 362,154,675,976.92/687,606.32
6. Step 6: Final answer
   x = 526,688.99