Finding the Fourth Proportional to 1,139,551.32, 1,709,424.18 and 298,101.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,551.32 : 1,709,424.18 = 298,101.72 : x
2. Step 2: Convert to fraction form
   1,139,551.32/1,709,424.18 = 298,101.72/x
3. Step 3: Cross multiply
   1,139,551.32x = 1,709,424.18 × 298,101.72
4. Step 4: Simplify right side
   1,139,551.32x = 509,582,288,267.59
5. Step 5: Solve for x
   x = 509,582,288,267.59/1,139,551.32
6. Step 6: Final answer
   x = 447,178.01