Finding the Fourth Proportional to 915,345.06, 1,372,956 and 316,314.42

Step by Step Solution

1. Step 1: Write the proportion equation
   915,345.06 : 1,372,956 = 316,314.42 : x
2. Step 2: Convert to fraction form
   915,345.06/1,372,956 = 316,314.42/x
3. Step 3: Cross multiply
   915,345.06x = 1,372,956 × 316,314.42
4. Step 4: Simplify right side
   915,345.06x = 434,285,780,825.52
5. Step 5: Solve for x
   x = 434,285,780,825.52/915,345.06
6. Step 6: Final answer
   x = 474,450.35