Finding the Fourth Proportional to 1,899,890.82, 2,850,131.52 and 638,013.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899,890.82 : 2,850,131.52 = 638,013.69 : x
2. Step 2: Convert to fraction form
   1,899,890.82/2,850,131.52 = 638,013.69/x
3. Step 3: Cross multiply
   1,899,890.82x = 2,850,131.52 × 638,013.69
4. Step 4: Simplify right side
   1,899,890.82x = 1,818,422,928,060.51
5. Step 5: Solve for x
   x = 1,818,422,928,060.51/1,899,890.82
6. Step 6: Final answer
   x = 957,119.70