Finding the Fourth Proportional to 805,499.34, 1,208,302.38 and 236,931.30

Step by Step Solution

1. Step 1: Write the proportion equation
   805,499.34 : 1,208,302.38 = 236,931.30 : x
2. Step 2: Convert to fraction form
   805,499.34/1,208,302.38 = 236,931.30/x
3. Step 3: Cross multiply
   805,499.34x = 1,208,302.38 × 236,931.30
4. Step 4: Simplify right side
   805,499.34x = 286,284,653,686.49
5. Step 5: Solve for x
   x = 286,284,653,686.49/805,499.34
6. Step 6: Final answer
   x = 355,412.65