Finding the Fourth Proportional to 838,145.12, 1,156,664.79 and 456,196.64

Step by Step Solution

1. Step 1: Write the proportion equation
   838,145.12 : 1,156,664.79 = 456,196.64 : x
2. Step 2: Convert to fraction form
   838,145.12/1,156,664.79 = 456,196.64/x
3. Step 3: Cross multiply
   838,145.12x = 1,156,664.79 × 456,196.64
4. Step 4: Simplify right side
   838,145.12x = 527,666,590,804.31
5. Step 5: Solve for x
   x = 527,666,590,804.31/838,145.12
6. Step 6: Final answer
   x = 629,564.71