Finding the Fourth Proportional to 2,087,901.69, 2,881,256.85 and 1,216,681.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087,901.69 : 2,881,256.85 = 1,216,681.89 : x
2. Step 2: Convert to fraction form
   2,087,901.69/2,881,256.85 = 1,216,681.89/x
3. Step 3: Cross multiply
   2,087,901.69x = 2,881,256.85 × 1,216,681.89
4. Step 4: Simplify right side
   2,087,901.69x = 3,505,573,029,833.45
5. Step 5: Solve for x
   x = 3,505,573,029,833.45/2,087,901.69
6. Step 6: Final answer
   x = 1,678,993.34