Finding the Fourth Proportional to 949,298.79, 1,309,981.86 and 519,495.89

Step by Step Solution

1. Step 1: Write the proportion equation
   949,298.79 : 1,309,981.86 = 519,495.89 : x
2. Step 2: Convert to fraction form
   949,298.79/1,309,981.86 = 519,495.89/x
3. Step 3: Cross multiply
   949,298.79x = 1,309,981.86 × 519,495.89
4. Step 4: Simplify right side
   949,298.79x = 680,530,185,694.65
5. Step 5: Solve for x
   x = 680,530,185,694.65/949,298.79
6. Step 6: Final answer
   x = 716,876.70