Finding the Fourth Proportional to 1,128,293.60, 1,557,085.52 and 619,010.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,293.60 : 1,557,085.52 = 619,010.72 : x
2. Step 2: Convert to fraction form
   1,128,293.60/1,557,085.52 = 619,010.72/x
3. Step 3: Cross multiply
   1,128,293.60x = 1,557,085.52 × 619,010.72
4. Step 4: Simplify right side
   1,128,293.60x = 963,852,628,836.77
5. Step 5: Solve for x
   x = 963,852,628,836.77/1,128,293.60
6. Step 6: Final answer
   x = 854,256.93