Finding the Fourth Proportional to 3,688,493, 5,090,275.86 and 2,078,861

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688,493 : 5,090,275.86 = 2,078,861 : x
2. Step 2: Convert to fraction form
   3,688,493/5,090,275.86 = 2,078,861/x
3. Step 3: Cross multiply
   3,688,493x = 5,090,275.86 × 2,078,861
4. Step 4: Simplify right side
   3,688,493x = 10,581,975,964,595.46
5. Step 5: Solve for x
   x = 10,581,975,964,595.46/3,688,493
6. Step 6: Final answer
   x = 2,868,915.83