Finding the Fourth Proportional to 885,870.69, 1,329,017.69 and 286,832.49

Step by Step Solution

1. Step 1: Write the proportion equation
   885,870.69 : 1,329,017.69 = 286,832.49 : x
2. Step 2: Convert to fraction form
   885,870.69/1,329,017.69 = 286,832.49/x
3. Step 3: Cross multiply
   885,870.69x = 1,329,017.69 × 286,832.49
4. Step 4: Simplify right side
   885,870.69x = 381,205,451,842.59
5. Step 5: Solve for x
   x = 381,205,451,842.59/885,870.69
6. Step 6: Final answer
   x = 430,317.26