Finding the Fourth Proportional to 989,871.84, 1,366,026.72 and 537,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   989,871.84 : 1,366,026.72 = 537,162.72 : x
2. Step 2: Convert to fraction form
   989,871.84/1,366,026.72 = 537,162.72/x
3. Step 3: Cross multiply
   989,871.84x = 1,366,026.72 × 537,162.72
4. Step 4: Simplify right side
   989,871.84x = 733,778,628,507.88
5. Step 5: Solve for x
   x = 733,778,628,507.88/989,871.84
6. Step 6: Final answer
   x = 741,286.50