Finding the Fourth Proportional to 2,661,411.21, 3,672,743.90 and 1,515,491.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661,411.21 : 3,672,743.90 = 1,515,491.61 : x
2. Step 2: Convert to fraction form
   2,661,411.21/3,672,743.90 = 1,515,491.61/x
3. Step 3: Cross multiply
   2,661,411.21x = 3,672,743.90 × 1,515,491.61
4. Step 4: Simplify right side
   2,661,411.21x = 5,566,012,558,551.22
5. Step 5: Solve for x
   x = 5,566,012,558,551.22/2,661,411.21
6. Step 6: Final answer
   x = 2,091,376.39