Finding the Fourth Proportional to 1,139,952.72, 1,709,880.48 and 298,485.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,952.72 : 1,709,880.48 = 298,485.84 : x
2. Step 2: Convert to fraction form
   1,139,952.72/1,709,880.48 = 298,485.84/x
3. Step 3: Cross multiply
   1,139,952.72x = 1,709,880.48 × 298,485.84
4. Step 4: Simplify right side
   1,139,952.72x = 510,375,111,372.40
5. Step 5: Solve for x
   x = 510,375,111,372.40/1,139,952.72
6. Step 6: Final answer
   x = 447,716.03