Finding the Fourth Proportional to 1,123,826, 1,685,740.71 and 458,978

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,826 : 1,685,740.71 = 458,978 : x
2. Step 2: Convert to fraction form
   1,123,826/1,685,740.71 = 458,978/x
3. Step 3: Cross multiply
   1,123,826x = 1,685,740.71 × 458,978
4. Step 4: Simplify right side
   1,123,826x = 773,717,899,594.38
5. Step 5: Solve for x
   x = 773,717,899,594.38/1,123,826
6. Step 6: Final answer
   x = 688,467.70