Finding the Fourth Proportional to 2,620,628.47, 3,931,888.56 and 915,023.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620,628.47 : 3,931,888.56 = 915,023.04 : x
2. Step 2: Convert to fraction form
   2,620,628.47/3,931,888.56 = 915,023.04/x
3. Step 3: Cross multiply
   2,620,628.47x = 3,931,888.56 × 915,023.04
4. Step 4: Simplify right side
   2,620,628.47x = 3,597,768,623,112.42
5. Step 5: Solve for x
   x = 3,597,768,623,112.42/2,620,628.47
6. Step 6: Final answer
   x = 1,372,864.82