Finding the Fourth Proportional to 1,066,458.72, 1,471,730.58 and 636,776.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066,458.72 : 1,471,730.58 = 636,776.40 : x
2. Step 2: Convert to fraction form
   1,066,458.72/1,471,730.58 = 636,776.40/x
3. Step 3: Cross multiply
   1,066,458.72x = 1,471,730.58 × 636,776.40
4. Step 4: Simplify right side
   1,066,458.72x = 937,163,300,502.31
5. Step 5: Solve for x
   x = 937,163,300,502.31/1,066,458.72
6. Step 6: Final answer
   x = 878,761.91