Finding the Fourth Proportional to 622,892.10, 874,410.90 and 622,892.10

Step by Step Solution

1. Step 1: Write the proportion equation
   622,892.10 : 874,410.90 = 622,892.10 : x
2. Step 2: Convert to fraction form
   622,892.10/874,410.90 = 622,892.10/x
3. Step 3: Cross multiply
   622,892.10x = 874,410.90 × 622,892.10
4. Step 4: Simplify right side
   622,892.10x = 544,663,641,763.89
5. Step 5: Solve for x
   x = 544,663,641,763.89/622,892.10
6. Step 6: Final answer
   x = 874,410.90