Finding the Fourth Proportional to 1,064,498.21, 1,596,156.56 and 354,138.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064,498.21 : 1,596,156.56 = 354,138.47 : x
2. Step 2: Convert to fraction form
   1,064,498.21/1,596,156.56 = 354,138.47/x
3. Step 3: Cross multiply
   1,064,498.21x = 1,596,156.56 × 354,138.47
4. Step 4: Simplify right side
   1,064,498.21x = 565,260,442,038.86
5. Step 5: Solve for x
   x = 565,260,442,038.86/1,064,498.21
6. Step 6: Final answer
   x = 531,011.17