Finding the Fourth Proportional to 905,849.38, 1,250,074.76 and 518,670.69

Step by Step Solution

1. Step 1: Write the proportion equation
   905,849.38 : 1,250,074.76 = 518,670.69 : x
2. Step 2: Convert to fraction form
   905,849.38/1,250,074.76 = 518,670.69/x
3. Step 3: Cross multiply
   905,849.38x = 1,250,074.76 × 518,670.69
4. Step 4: Simplify right side
   905,849.38x = 648,377,138,071.32
5. Step 5: Solve for x
   x = 648,377,138,071.32/905,849.38
6. Step 6: Final answer
   x = 715,767.05