Finding the Fourth Proportional to 1,118,680.61, 1,676,519.17 and 612,477.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,680.61 : 1,676,519.17 = 612,477.59 : x
2. Step 2: Convert to fraction form
   1,118,680.61/1,676,519.17 = 612,477.59/x
3. Step 3: Cross multiply
   1,118,680.61x = 1,676,519.17 × 612,477.59
4. Step 4: Simplify right side
   1,118,680.61x = 1,026,830,410,916.61
5. Step 5: Solve for x
   x = 1,026,830,410,916.61/1,118,680.61
6. Step 6: Final answer
   x = 917,894.17