Finding the Fourth Proportional to 2,075,686.67, 2,864,382.61 and 1,216,818.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075,686.67 : 2,864,382.61 = 1,216,818.95 : x
2. Step 2: Convert to fraction form
   2,075,686.67/2,864,382.61 = 1,216,818.95/x
3. Step 3: Cross multiply
   2,075,686.67x = 2,864,382.61 × 1,216,818.95
4. Step 4: Simplify right side
   2,075,686.67x = 3,485,435,039,898.46
5. Step 5: Solve for x
   x = 3,485,435,039,898.46/2,075,686.67
6. Step 6: Final answer
   x = 1,679,172.05