Finding the Fourth Proportional to 452,667.89, 681,709.89 and 412,312.26

Step by Step Solution

1. Step 1: Write the proportion equation
   452,667.89 : 681,709.89 = 412,312.26 : x
2. Step 2: Convert to fraction form
   452,667.89/681,709.89 = 412,312.26/x
3. Step 3: Cross multiply
   452,667.89x = 681,709.89 × 412,312.26
4. Step 4: Simplify right side
   452,667.89x = 281,077,345,410.25
5. Step 5: Solve for x
   x = 281,077,345,410.25/452,667.89
6. Step 6: Final answer
   x = 620,935.03