Finding the Fourth Proportional to 1,499,636, 2,069,497.68 and 820,572.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,636 : 2,069,497.68 = 820,572.50 : x
2. Step 2: Convert to fraction form
   1,499,636/2,069,497.68 = 820,572.50/x
3. Step 3: Cross multiply
   1,499,636x = 2,069,497.68 × 820,572.50
4. Step 4: Simplify right side
   1,499,636x = 1,698,172,885,021.80
5. Step 5: Solve for x
   x = 1,698,172,885,021.80/1,499,636
6. Step 6: Final answer
   x = 1,132,390.05