Finding the Fourth Proportional to 1,095,499.60, 1,640,484.60 and 874,315.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095,499.60 : 1,640,484.60 = 874,315.60 : x
2. Step 2: Convert to fraction form
   1,095,499.60/1,640,484.60 = 874,315.60/x
3. Step 3: Cross multiply
   1,095,499.60x = 1,640,484.60 × 874,315.60
4. Step 4: Simplify right side
   1,095,499.60x = 1,434,301,277,339.76
5. Step 5: Solve for x
   x = 1,434,301,277,339.76/1,095,499.60
6. Step 6: Final answer
   x = 1,309,266.82