Finding the Fourth Proportional to 687,667.60, 948,933.72 and 381,719.92

Step by Step Solution

1. Step 1: Write the proportion equation
   687,667.60 : 948,933.72 = 381,719.92 : x
2. Step 2: Convert to fraction form
   687,667.60/948,933.72 = 381,719.92/x
3. Step 3: Cross multiply
   687,667.60x = 948,933.72 × 381,719.92
4. Step 4: Simplify right side
   687,667.60x = 362,226,903,683.70
5. Step 5: Solve for x
   x = 362,226,903,683.70/687,667.60
6. Step 6: Final answer
   x = 526,747.08