Finding the Fourth Proportional to 2,108,690.83, 2,909,997.29 and 1,178,398.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108,690.83 : 2,909,997.29 = 1,178,398.57 : x
2. Step 2: Convert to fraction form
   2,108,690.83/2,909,997.29 = 1,178,398.57/x
3. Step 3: Cross multiply
   2,108,690.83x = 2,909,997.29 × 1,178,398.57
4. Step 4: Simplify right side
   2,108,690.83x = 3,429,136,645,239.88
5. Step 5: Solve for x
   x = 3,429,136,645,239.88/2,108,690.83
6. Step 6: Final answer
   x = 1,626,192.23