Finding the Fourth Proportional to 1,126,978.56, 1,689,845.76 and 462,597.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126,978.56 : 1,689,845.76 = 462,597.12 : x
2. Step 2: Convert to fraction form
   1,126,978.56/1,689,845.76 = 462,597.12/x
3. Step 3: Cross multiply
   1,126,978.56x = 1,689,845.76 × 462,597.12
4. Step 4: Simplify right side
   1,126,978.56x = 781,717,781,820.21
5. Step 5: Solve for x
   x = 781,717,781,820.21/1,126,978.56
6. Step 6: Final answer
   x = 693,640.33