Finding the Fourth Proportional to 879,214.17, 1,213,380.72 and 492,068.37

Step by Step Solution

1. Step 1: Write the proportion equation
   879,214.17 : 1,213,380.72 = 492,068.37 : x
2. Step 2: Convert to fraction form
   879,214.17/1,213,380.72 = 492,068.37/x
3. Step 3: Cross multiply
   879,214.17x = 1,213,380.72 × 492,068.37
4. Step 4: Simplify right side
   879,214.17x = 597,066,273,079.83
5. Step 5: Solve for x
   x = 597,066,273,079.83/879,214.17
6. Step 6: Final answer
   x = 679,090.82