Finding the Fourth Proportional to 1,238,196.49, 1,857,103.16 and 508,793.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,196.49 : 1,857,103.16 = 508,793.65 : x
2. Step 2: Convert to fraction form
   1,238,196.49/1,857,103.16 = 508,793.65/x
3. Step 3: Cross multiply
   1,238,196.49x = 1,857,103.16 × 508,793.65
4. Step 4: Simplify right side
   1,238,196.49x = 944,882,283,373.45
5. Step 5: Solve for x
   x = 944,882,283,373.45/1,238,196.49
6. Step 6: Final answer
   x = 763,111.75