Finding the Fourth Proportional to 1,111,332.72, 1,666,804.71 and 312,424.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111,332.72 : 1,666,804.71 = 312,424.38 : x
2. Step 2: Convert to fraction form
   1,111,332.72/1,666,804.71 = 312,424.38/x
3. Step 3: Cross multiply
   1,111,332.72x = 1,666,804.71 × 312,424.38
4. Step 4: Simplify right side
   1,111,332.72x = 520,750,428,102.83
5. Step 5: Solve for x
   x = 520,750,428,102.83/1,111,332.72
6. Step 6: Final answer
   x = 468,581.93