Finding the Fourth Proportional to 1,300,973.10, 1,951,645.55 and 402,491.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300,973.10 : 1,951,645.55 = 402,491.54 : x
2. Step 2: Convert to fraction form
   1,300,973.10/1,951,645.55 = 402,491.54/x
3. Step 3: Cross multiply
   1,300,973.10x = 1,951,645.55 × 402,491.54
4. Step 4: Simplify right side
   1,300,973.10x = 785,520,811,182.96
5. Step 5: Solve for x
   x = 785,520,811,182.96/1,300,973.10
6. Step 6: Final answer
   x = 603,794.81