Finding the Fourth Proportional to 915,667.50, 1,373,698.08 and 308,516.16

Step by Step Solution

1. Step 1: Write the proportion equation
   915,667.50 : 1,373,698.08 = 308,516.16 : x
2. Step 2: Convert to fraction form
   915,667.50/1,373,698.08 = 308,516.16/x
3. Step 3: Cross multiply
   915,667.50x = 1,373,698.08 × 308,516.16
4. Step 4: Simplify right side
   915,667.50x = 423,808,056,640.97
5. Step 5: Solve for x
   x = 423,808,056,640.97/915,667.50
6. Step 6: Final answer
   x = 462,840.56