Finding the Fourth Proportional to 3,676,598.91, 5,515,046.73 and 1,280,685.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,676,598.91 : 5,515,046.73 = 1,280,685.87 : x
2. Step 2: Convert to fraction form
   3,676,598.91/5,515,046.73 = 1,280,685.87/x
3. Step 3: Cross multiply
   3,676,598.91x = 5,515,046.73 × 1,280,685.87
4. Step 4: Simplify right side
   3,676,598.91x = 7,063,042,419,500.71
5. Step 5: Solve for x
   x = 7,063,042,419,500.71/3,676,598.91
6. Step 6: Final answer
   x = 1,921,080.49