Finding the Fourth Proportional to 917,456.63, 1,376,116.91 and 384,956.15

Step by Step Solution

1. Step 1: Write the proportion equation
   917,456.63 : 1,376,116.91 = 384,956.15 : x
2. Step 2: Convert to fraction form
   917,456.63/1,376,116.91 = 384,956.15/x
3. Step 3: Cross multiply
   917,456.63x = 1,376,116.91 × 384,956.15
4. Step 4: Simplify right side
   917,456.63x = 529,744,665,698.72
5. Step 5: Solve for x
   x = 529,744,665,698.72/917,456.63
6. Step 6: Final answer
   x = 577,405.68